How to reproduce:
Dim table As New DataTable()
table.Columns.Add("Name", GetType(String))
table.Columns.Add("X", GetType(Integer))
 
For i As Integer = 0 To 99
    table.Rows.Add($"User {i}", i)
Next
 
Dim series As New BarSeries()
series.DataSource = table
series.CategoryMember = "Name"
series.ValueMember = "X"
 
RadChartView1.Series.Add(series)
 
CType(RadChartView1.Area, CartesianArea).Orientation = Orientation.Horizontal
         
Dim panZoomController As New ChartPanZoomController()
panZoomController.PanZoomMode = ChartPanZoomMode.Vertical
RadChartView1.Controllers.Add(panZoomController)
 
RadChartView1.Zoom(1, 8)

Workaround: create a custom ChartPanZoomController
Dim panZoomController As New MyChartPanZoomController()
panZoomController.PanZoomMode = ChartPanZoomMode.Vertical
RadChartView1.Controllers.Add(panZoomController)

Public Class MyChartPanZoomController
    Inherits ChartPanZoomController

    Protected Overrides Function OnMouseMove(e As MouseEventArgs) As ActionResult

        Dim cartesianArea As CartesianArea = TryCast(Me.Area, CartesianArea)
        If cartesianArea Is Nothing Then
            Return MyBase.OnMouseMove(e)
        End If

        Dim panPoint As Point? = Me.GetType().BaseType.GetField("panPoint", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(Me)

        If e.Button = MouseButtons.Left AndAlso panPoint.HasValue Then
            Dim offsetX As Double = Me.GetType().BaseType.GetField("offsetX", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(Me)

            Dim currentOffsetX As Double = offsetX
            Dim defaultAxis As Axis = If(cartesianArea.Orientation = Orientation.Horizontal,
                                         Me.Area.GetType().GetMethod("GetDefaultFirstAxis", BindingFlags.Instance Or BindingFlags.NonPublic).Invoke(Me.Area, New Object() {}),
                                         Me.Area.GetType().GetMethod("GetDefaultSecondAxis", BindingFlags.Instance Or BindingFlags.NonPublic).Invoke(Me.Area, New Object() {}))

            If Me.PanZoomMode = ChartPanZoomMode.Horizontal OrElse Me.PanZoomMode = ChartPanZoomMode.Both Then
                currentOffsetX += (panPoint.Value.X - e.Location.X) * -1

                If currentOffsetX > 0 Then
                    currentOffsetX = 0
                End If

                If currentOffsetX < defaultAxis.Model.LayoutSlot.Width * (DirectCast(cartesianArea.View, IChartView).ZoomWidth - 1) Then
                    currentOffsetX = -defaultAxis.Model.LayoutSlot.Width * (DirectCast(cartesianArea.View, IChartView).ZoomWidth - 1)
                End If
            End If

            Dim offsetY As Double = Me.GetType().BaseType.GetField("offsetY", BindingFlags.Instance Or BindingFlags.NonPublic).GetValue(Me)
            Dim currentOffsetY As Double = offsetY
            If Me.PanZoomMode = ChartPanZoomMode.Vertical OrElse Me.PanZoomMode = ChartPanZoomMode.Both Then
                currentOffsetY += (panPoint.Value.Y - e.Location.Y) * -1

                If currentOffsetY > 0 Then
                    currentOffsetY = 0
                End If

                If currentOffsetY < -defaultAxis.Model.LayoutSlot.Height * (DirectCast(cartesianArea.View, IChartView).ZoomHeight - 1) Then
                    currentOffsetY = -defaultAxis.Model.LayoutSlot.Height * (DirectCast(cartesianArea.View, IChartView).ZoomHeight - 1)
                End If
            End If

            cartesianArea.View.Pan(currentOffsetX, currentOffsetY)
        End If

        Return Controller.Empty

    End Function

End Class

To reproduce: populate RadChartView with data and try to export it to Emf

using (MemoryStream ms = new MemoryStream())
{
    this.radChartView1.ExportToImage(ms, this.radChartView1.Size, System.Drawing.Imaging.ImageFormat.Emf); 
}

Workaround: use some of the other ImageFormats.

To reproduce:

Public Sub New()
    InitializeComponent()

    Me.RadChartView1.ShowTitle = True
    Me.RadChartView1.ChartElement.TitleElement.TextWrap = True
    Me.RadChartView1.Title = "This is a very long chart title that can't fit in a single line"

    Dim barSeries As New BarSeries("Performance", "RepresentativeName")
    barSeries.Name = "Q1"
    barSeries.DataPoints.Add(New CategoricalDataPoint(177, "Harley"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(128, "White"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(143, "Smith"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(111, "Jones"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(118, "Marshall"))
    Me.RadChartView1.Series.Add(barSeries)
End Sub

Private Sub radButton1_Click(sender As Object, e As EventArgs) Handles RadButton1.Click 
    Dim filePath As String = "..\..\..\exprtedChart.png"
    Me.RadChartView1.ExportToImage(filePath, Me.RadChartView1.Size, System.Drawing.Imaging.ImageFormat.Png)
    Process.Start(filePath)
End Sub


Workaround: titleSize must consider the chart's width

Public Sub New()
    InitializeComponent()
    AddHandler Me.RadChartView1.CreateRenderer, AddressOf CreateRenderer
    Me.RadChartView1.ShowTitle = True
    Me.RadChartView1.ChartElement.TitleElement.TextWrap = True
    Me.RadChartView1.Title = "This is a very long chart title that can't fit in a single line"

    Dim barSeries As New BarSeries("Performance", "RepresentativeName")
    barSeries.Name = "Q1"
    barSeries.DataPoints.Add(New CategoricalDataPoint(177, "Harley"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(128, "White"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(143, "Smith"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(111, "Jones"))
    barSeries.DataPoints.Add(New CategoricalDataPoint(118, "Marshall"))
    Me.RadChartView1.Series.Add(barSeries)
End Sub

Private Sub radButton1_Click(sender As Object, e As EventArgs) Handles RadButton1.Click
    Dim filePath As String = "..\..\..\exprtedChart.png"
    Using fs As New FileStream(filePath, FileMode.Create, FileAccess.Write)
        ExportToImage(Me.RadChartView1, fs, Me.RadChartView1.Size, System.Drawing.Imaging.ImageFormat.Png)
    End Using
    Process.Start(filePath)
End Sub

Public Sub ExportToImage(chart As RadChartView, stream As Stream, size As Size, imageFormat As ImageFormat)
    If Not chart.IsLoaded Then
        chart.LoadElementTree()
    End If

    Dim bmp As New Bitmap(size.Width, size.Height)
    Dim graphics__1 As Graphics = Graphics.FromImage(bmp)
    graphics__1.Clear(Color.White)

    Dim titleSize As SizeF = graphics__1.MeasureString(chart.Title, chart.ChartElement.TitleElement.Font, chart.Width)

    If chart.ChartElement.TitleElement.TextOrientation = Orientation.Vertical Then
        Dim swap As Single = titleSize.Height
        titleSize.Height = titleSize.Width
        titleSize.Width = swap
    End If

    Dim titleRect As New RadRect(0, 0, titleSize.Width, titleSize.Height)
    Dim legendRect As New RadRect(0, 0, size.Width, size.Height)
    Dim chartRect As RadRect = legendRect

    Select Case chart.ChartElement.TitlePosition
        Case TitlePosition.Top, TitlePosition.Bottom
            titleRect.Width = size.Width
            Exit Select
        Case TitlePosition.Right, TitlePosition.Left
            titleRect.Height = size.Height
            Exit Select
    End Select

    chartRect.X += chart.View.Margin.Left
    chartRect.Y += chart.View.Margin.Top
    chartRect.Width -= chart.View.Margin.Horizontal
    chartRect.Height -= chart.View.Margin.Vertical

    If chart.ShowTitle Then
        Select Case chart.ChartElement.TitlePosition
            Case TitlePosition.Top
                legendRect.Y += titleRect.Height
                chartRect.Y += titleRect.Height
                legendRect.Height -= titleRect.Height
                chartRect.Height -= titleRect.Height
                Exit Select
            Case TitlePosition.Right
                titleRect.X = size.Width - chart.ChartElement.TitleElement.Size.Width
                titleRect.Height = size.Height
                legendRect.Width -= titleRect.Width
                chartRect.Width -= titleRect.Width
                Exit Select
            Case TitlePosition.Bottom
                titleRect.Y = size.Height - chart.ChartElement.TitleElement.Size.Height
                titleRect.Width = size.Width
                legendRect.Height -= titleRect.Height
                chartRect.Height -= titleRect.Height
                Exit Select
            Case TitlePosition.Left
                titleRect.Height = size.Height
                legendRect.X += titleRect.Width
                chartRect.X += titleRect.Width
                legendRect.Width -= titleRect.Width
                chartRect.Width -= titleRect.Width
                Exit Select
        End Select
    End If

    If chart.ShowLegend Then
        Select Case chart.ChartElement.LegendPosition
            Case LegendPosition.Right
                If chart.ChartElement.TitlePosition = TitlePosition.Right Then
                    legendRect.X = titleRect.X - chart.ChartElement.LegendElement.Size.Width
                Else
                    legendRect.X = size.Width - chart.ChartElement.LegendElement.Size.Width
                End If

                legendRect.Width = chart.ChartElement.LegendElement.Size.Width
                chartRect.Width -= legendRect.Width + chart.View.Margin.Right
                Exit Select
            Case LegendPosition.Bottom
                If chart.ChartElement.TitlePosition = TitlePosition.Bottom Then
                    legendRect.Y = titleRect.Y - chart.ChartElement.LegendElement.Size.Height
                Else
                    legendRect.Y = size.Height - chart.ChartElement.LegendElement.Size.Height
                End If

                legendRect.Height = chart.ChartElement.LegendElement.Size.Height
                chartRect.Height -= legendRect.Height
                Exit Select
            Case LegendPosition.Left
                legendRect.Width = chart.ChartElement.LegendElement.Size.Width
                chartRect.X += legendRect.Width + chart.View.Margin.Left
                chartRect.Width -= legendRect.Width + chart.View.Margin.Left
                Exit Select
            Case LegendPosition.Top
                legendRect.Height = chart.ChartElement.LegendElement.Size.Height
                chartRect.Y += legendRect.Height
                chartRect.Height -= legendRect.Height
                Exit Select
            Case LegendPosition.Float
                legendRect.Width = chart.ChartElement.LegendElement.Size.Width
                legendRect.Height = chart.ChartElement.LegendElement.Size.Height
                Dim xRatio As Double = size.Width / Me.Size.Width
                Dim yRatio As Double = size.Height / Me.Size.Height
                legendRect.X = (chart.ChartElement.LegendOffset.X * xRatio) + (If((chart.ChartElement.TitlePosition = TitlePosition.Left), titleRect.Right, 0.0))
                legendRect.Y = (chart.ChartElement.LegendOffset.Y * yRatio) + (If((chart.ChartElement.TitlePosition = TitlePosition.Top), titleRect.Bottom, 0.0F))
                Exit Select
        End Select
    End If

    If chart.ShowLegend Then
        Dim xTransform As Single = CSng(legendRect.X) - chart.ChartElement.LegendElement.ControlBoundingRectangle.X + _
        (CSng(legendRect.Width) - chart.ChartElement.LegendElement.ControlBoundingRectangle.Width) / 2.0F
        Dim yTransform As Single = CSng(legendRect.Y) - chart.ChartElement.LegendElement.ControlBoundingRectangle.Y + _
        (CSng(legendRect.Height) - chart.ChartElement.LegendElement.ControlBoundingRectangle.Height) / 2.0F
        graphics__1.TranslateTransform(xTransform, yTransform)
        chart.ChartElement.LegendElement.Paint(New RadGdiGraphics(graphics__1), _
                                               chart.ChartElement.LegendElement.ControlBoundingRectangle, 0.0F, New SizeF(1.0F, 1.0F), True)
        graphics__1.ResetTransform()
    End If

    Dim radGraphics As New RadGdiGraphics(graphics__1)

    If chart.ShowTitle Then
        radGraphics.DrawString(chart.Title, GetTitleDrawRectangle(ChartRenderer.ToRectangleF(titleRect), _
                                                                  titleSize, chart.ChartElement.TitleElement.TextAlignment), chart.ChartElement.TitleElement.Font, _
                               chart.ChartElement.TitleElement.ForeColor, chart.ChartElement.TitleElement.TextParams.CreateStringFormat(), _
                               chart.ChartElement.TitleElement.TextOrientation, _
                               chart.ChartElement.TitleElement.FlipText)
    End If

    chart.View.Layout(chartRect)
    renderer.Draw(graphics__1)

    bmp.Save(stream, imageFormat)
    chart.View.Layout()
End Sub

Private Function GetTitleDrawRectangle(drawArea As RectangleF, textRect As SizeF, textAlignment As ContentAlignment) As RectangleF
    Select Case textAlignment
        Case ContentAlignment.BottomCenter
            Return New RectangleF(New PointF(drawArea.X + (drawArea.Width - textRect.Width) / 2.0F, drawArea.Bottom - textRect.Height), textRect)
        Case ContentAlignment.BottomLeft
            Return New RectangleF(New PointF(drawArea.X, drawArea.Bottom - textRect.Height), textRect)
        Case ContentAlignment.BottomRight
            Return New RectangleF(New PointF(drawArea.Right - textRect.Width, drawArea.Bottom - textRect.Height), textRect)
        Case ContentAlignment.MiddleCenter
            Return New RectangleF(New PointF(drawArea.X + (drawArea.Width - textRect.Width) / 2.0F, drawArea.Y + (drawArea.Height - textRect.Height) / 2.0F), textRect)
        Case ContentAlignment.MiddleLeft
            Return New RectangleF(New PointF(drawArea.X, drawArea.Y + (drawArea.Height - textRect.Height) / 2.0F), textRect)
        Case ContentAlignment.MiddleRight
            Return New RectangleF(New PointF(drawArea.Right - textRect.Width, drawArea.Y + (drawArea.Height - textRect.Height) / 2.0F), textRect)
        Case ContentAlignment.TopCenter
            Return New RectangleF(New PointF(drawArea.X + (drawArea.Width - textRect.Width) / 2, drawArea.Y), textRect)
        Case ContentAlignment.TopLeft
            Return New RectangleF(drawArea.Location, textRect)
        Case ContentAlignment.TopRight
            Return New RectangleF(New PointF(drawArea.Right - textRect.Width, drawArea.Y), textRect)
        Case Else
            Return New RectangleF(drawArea.Location, textRect)
    End Select
End Function

Dim renderer As CartesianRenderer
Private Sub CreateRenderer(sender As Object, e As ChartViewCreateRendererEventArgs)
    e.Renderer = New CartesianRenderer(DirectCast(e.Area, CartesianArea))
    renderer = e.Renderer
End Sub

To reproduce:
LegendItem item = new LegendItem();
item.Element.BorderColor = Color.Black;
item.Element.BackColor = Color.Yellow;
item.Title = "Custom item";
this.radChartView1.ChartElement.LegendElement.Items.Add(item);

Workaround:
class MyLegendItem : LegendItem
{
    string title = "";
    protected override void SetLegendTitle(string title)
    {
        base.SetLegendTitle(title);
         
        if (this.Element is LegendItemStyleElement)
        {
            this.title = title;
        }
    }
    protected override string GetLegendTitle()
    {
        if (this.Element is LegendItemStyleElement)
        {
           return title;
        }
        return base.GetLegendTitle();

    }
}

To reproduce:

LineSeries lineSeries = new LineSeries();
lineSeries.DataPoints.Add(new CategoricalDataPoint(20, "Jan"));
lineSeries.DataPoints.Add(new CategoricalDataPoint(22, "Apr"));
lineSeries.DataPoints.Add(new CategoricalDataPoint(12, "Jul"));
lineSeries.DataPoints.Add(new CategoricalDataPoint(19, "Oct"));
lineSeries.LegendTitle = "Series A asdafsafasfd fgsdfg sdfs dfg dafsvsd";
this.radChartView1.Series.Add(lineSeries);
LineSeries lineSeries2 = new LineSeries();
lineSeries2.DataPoints.Add(new CategoricalDataPoint(18, "Jan"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(15, "Apr"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(17, "Jul"));
lineSeries2.DataPoints.Add(new CategoricalDataPoint(22, "Oct"));
lineSeries2.LegendTitle = "Series B sdf asdf adfasdfas dfadsf asdf sadf awef";
this.radChartView1.Series.Add(lineSeries2);
LineSeries lineSeries3 = new LineSeries();
lineSeries3.DataPoints.Add(new CategoricalDataPoint(13, "Jan"));
lineSeries3.DataPoints.Add(new CategoricalDataPoint(14, "Apr"));
lineSeries3.DataPoints.Add(new CategoricalDataPoint(12, "Jul"));
lineSeries3.DataPoints.Add(new CategoricalDataPoint(25, "Oct"));
lineSeries3.LegendTitle = "Series C sdf asdf adfasdfas dfadsf asdf sadf awef";
this.radChartView1.Series.Add(lineSeries3);

this.radChartView1.ShowLegend = true;
this.radChartView1.ChartElement.LegendPosition = Telerik.WinControls.UI.LegendPosition.Bottom;
radChartView1.ChartElement.LegendElement.StackElement.Orientation = Orientation.Horizontal;

Workaround: specify minimum height for the legend

radChartView1.ChartElement.LegendElement.MinSize = new Size(0, 50);

To reproduce:
- Localize the palette names with the localization provider.
- Change the palette with the context menu.

Workaround:
class MyChartDataPointElementController : ChartDataPointElementController
{
    protected override RadContextMenu CreatePaletteMenu()
    {
        RadContextMenu menu = new RadContextMenu();

        RadChartLocalizationProvider localizationProvider = RadChartLocalizationProvider.CurrentProvider;

        RadMenuItem paletteItem = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.Palette));

        menu.Items.Add(paletteItem);

        RadMenuItem item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteArctic));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Arctic";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteAutumn));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Autumn";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteCold));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Gold";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteFlower));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Flower";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteForest));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Forest";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteGrayscale));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Grayscale";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteGround));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Ground";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteLilac));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Lilac";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteMetro));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Metro";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteNatural));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Natural";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PalettePastel));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Pastel";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteRainbow));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Rainbow";
        paletteItem.Items.Add(item);


        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteSpring));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Spring";
        paletteItem.Items.Add(item);


        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteSummer));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Summer";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteWarm));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Warm";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteWindows8));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Windows8";
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteSun));
        item.Click += new System.EventHandler(item_Click);
        item.Tag = "Sun";
        paletteItem.Items.Add(item);

        return menu;
    }

    void item_Click(object sender, System.EventArgs e)
    {
        RadMenuItem item = sender as RadMenuItem;
        if (item != null)
        {
            this.Area.View.Palette = ChartPalette.FromKnownPalette(item.Tag.ToString());
        }
    }
}

// change the controller

this.radChartView1.Controllers.Add(new MyChartDataPointElementController());

Use the attached project to reproduce.

Workaround:
Hide the panel after the form is shown.

To reproduce: 
- Add two donut series and set their RadiusFactor so both series can be seen.
- Add ChartSelectionController.
- You will be able to select points from the firs series only. 

Workaround:
class MyPieRenderer : PieRenderer
{
    public MyPieRenderer(PieArea area) : base(area)
    {
    }

    public override DataPoint HitTest(int x, int y)
    {
        if (this.DrawParts.Count > 0)
        {
            foreach (var item in this.DrawParts)
            {
                if (item is PieSeriesDrawPart)
                {
                    Dictionary<PieDataPoint, GraphicsPath> paths = ((PieSeriesDrawPart)item).PointPaths;

                    foreach (PieDataPoint point in paths.Keys)
                    {
                        GraphicsPath path = new GraphicsPath();
                        paths.TryGetValue(point, out path);

                        if (path != null)
                        {
                            if (path.IsVisible(x, y))
                            {
                                return point;
                            }
                        }
                    }
                }
            }
        }
        return null;
    }
}
private void RadChartView1_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
{
    e.Renderer = new MyPieRenderer((PieArea)e.Area);
}

To reproduce: 
- Use the attached file to reproduce.

Workaround:
- Reset the chart data source:
THIS-OBJECT:radChartView1:DataSource = ?.
THIS-OBJECT:radChartView1:DataSource = THIS-OBJECT:bindingSource1.

To reproduce:
- Just add StochasticSlowIndicator to a chart.

To reproduce:
public RadForm1()
{
    InitializeComponent();
    this.radChartView1.AreaType = ChartAreaType.Pie;
    PieSeries series = new PieSeries();
    series.DataPoints.Add(new PieDataPoint(50, "Germany"));
    series.DataPoints.Add(new PieDataPoint(70, "United States"));
    series.DataPoints.Add(new PieDataPoint(40, "France"));
    series.DataPoints.Add(new PieDataPoint(25, "United Kingdom"));
    series.ShowLabels = true;
    this.radChartView1.Series.Add(series);

    radChartView1.ShowLegend = true;
}
Random rnd = new Random();
private void radButton1_Click(object sender, EventArgs e)
{
     this.radChartView1.Series[0].DataPoints.RemoveAt(0);
     this.radChartView1.Series[0].DataPoints.Add(new PieDataPoint(rnd.Next(100), rnd.Next(100).ToString()));
}

Workaround:

private void radButton1_Click(object sender, EventArgs e)
{
    this.radChartView1.Series[0].DataPoints.RemoveAt(0);
    this.radChartView1.Series[0].DataPoints.Add(new PieDataPoint(50, rnd.Next(100).ToString()));

    this.radChartView1.ChartElement.LegendElement.Items.Clear();

    foreach (PieSeries series in radChartView1.Series)
    {
        for (int i = 0; i < series.DataPoints.Count; i++)
        {
            var dataPoint = series.DataPoints[i] as PieDataPoint;
            var element = series.Children[i] as PiePointElement;

            var legendItem = new LegendItem(element);
            legendItem.Title = dataPoint.LegendTitle;
          
            this.radChartView1.ChartElement.LegendElement.Items.Add(legendItem);
        }
        
    }
}

To reproduce:
- Add DateTimeContinuousAxis to a chart and set its MajorStep property.

Workaround:
Create the DateTimeContinuousAxis in the code behind.

To reproduce:
- Enable the Trackball
- Use the following code:
public RadForm1()
{
    InitializeComponent();

    ScatterLineSeries sls = radChartView1.Series[0] as ScatterLineSeries;
    sls.XValueMember = "X";
    sls.YValueMember = "Y";
}

private void timer1_Tick(object sender, EventArgs e)
{
    DataTable dt = new DataTable();
    dt.Columns.Add("X", typeof(double));
    dt.Columns.Add("Y", typeof(double));

    Random ran = new Random();
    for (int i = 0; i < 100; i++)
        dt.Rows.Add(i, 1 + ran.NextDouble() / 10);

    radChartView1.Series[0].DataSource = dt;
}

Workaround:
class MyChartTrackballController : ChartTrackballController
{
    protected override string GetPointText(DataPoint point)
    {
        ChartSeries series = point.Presenter as ChartSeries;
        if (series == null)
        {
            return string.Empty;
        }
        return base.GetPointText(point);
    }
}

To reproduce:
- Set the palette from the default context menu.
- Try to get the palette name.

Workaround:
class MyChartDataPointElementController : ChartDataPointElementController
{
    protected override RadContextMenu CreatePaletteMenu()
    {
        //return base.CreatePaletteMenu();
        RadContextMenu menu = new RadContextMenu();

        RadChartLocalizationProvider localizationProvider = RadChartLocalizationProvider.CurrentProvider;

        RadMenuItem paletteItem = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.Palette));
        menu.Items.Add(paletteItem);

        RadMenuItem item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteArctic));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteAutumn));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteCold));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteFlower));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteForest));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteGrayscale));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteGround));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteLilac));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteMetro));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteNatural));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PalettePastel));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteRainbow));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);


        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteSpring));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);


        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteSummer));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteWarm));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteWindows8));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        item = new RadMenuItem(localizationProvider.GetLocalizedString(RadChartStringId.PaletteSun));
        item.Click += new System.EventHandler(item_Click);
        paletteItem.Items.Add(item);

        return menu;
    }

    void item_Click(object sender, System.EventArgs e)
    {
        RadMenuItem item = sender as RadMenuItem;
        if (item != null)
        {
            this.Area.View.Palette = ChartPalette.FromKnownPalette(item.Text);
            this.Area.View.Palette.Name = item.Text;
        }
    }
}

Change the controller like this:
 radChartView1.Controllers.Add(new MyChartDataPointElementController());

To reproduce:
public RadForm1()
{
    InitializeComponent();
    date = DateTime.Now;
}
int dayCounter;
Random rnd = new Random();
DateTime date;


Timer timer = new Timer();
protected override void OnLoad(EventArgs e)
{
    base.OnLoad(e);
    LineSeries lineSeria = new LineSeries();
    DateTimeContinuousAxis continuousAxis = new DateTimeContinuousAxis();          
    continuousAxis.LabelFormat = "{0:dd}";
    lineSeria.HorizontalAxis = continuousAxis;
    radChartView1.Series.Add(lineSeria);

    for (int i = 0; i < 500; i++)
    {
        radChartView1.Series[0].DataPoints.Add(new CategoricalDataPoint(rnd.Next(1000), date.AddDays(dayCounter++)));
    }

    timer.Tick += timer_Tick;
    timer.Interval = 200;
    timer.Start();
}

void timer_Tick(object sender, EventArgs e)
{
    foreach (CategoricalDataPoint point in radChartView1.Series[0].DataPoints)
    {
       // point.Value = rnd.Next(1000);
        point.Category = date.AddDays(dayCounter++);
    }
}

Workaround:
void timer_Tick(object sender, EventArgs e)
{
    DateTimeContinuousAxis continuousAxis = ((LineSeries)radChartView1.Series[0]).HorizontalAxis as DateTimeContinuousAxis;

    HybridDictionary hashSet = typeof(Axis).GetField("hashSet", BindingFlags.NonPublic | BindingFlags.Instance).GetValue(continuousAxis) as HybridDictionary;
    hashSet.Clear();

}

To reproduce:

radChartView1.AreaType = ChartAreaType.Pie;
 
PieSeries series = new PieSeries();
 
series.DataPoints.Add(new PieDataPoint(50, "Germany"));
series.Children.LastOrDefault().BackColor = Color.Red;
series.Children.LastOrDefault().BorderColor = Color.Green;
 
series.DataPoints.Add(new PieDataPoint(70, "United States"));
series.Children.LastOrDefault().BackColor = Color.Green;
series.Children.LastOrDefault().BorderColor = Color.Red;
 
series.DataPoints.Add(new PieDataPoint(40, "France"));
series.Children.LastOrDefault().BackColor = Color.Blue;
series.Children.LastOrDefault().BorderColor = Color.Yellow;
 
series.DataPoints.Add(new PieDataPoint(25, "United Kingdom"));
series.Children.LastOrDefault().BackColor = Color.Yellow;
series.Children.LastOrDefault().BorderColor = Color.Blue;
 
this.radChartView1.Series.Add(series);
radChartView1.ShowLegend = true;

Workaround:
            for (int i = 0; i < radChartView1.ChartElement.LegendElement.Items.Count; i++)
            {
                PieDataPoint point = ((PieDataPoint)series.DataPoints[i]);
                radChartView1.ChartElement.LegendElement.Items[i].Element.BackColor = Color.Red;
                radChartView1.ChartElement.LegendElement.Items[i].Element.BorderColor = Color.Yellow;
            }

How to reproduce: 
public Form1()
        {
            InitializeComponent();

            DataTable source = new DataTable();
            source.Columns.Add("PreviousGoal", typeof(decimal));
            source.Columns.Add("CurrentCategory", typeof(System.DateTime));

            source.LoadDataRow(new object[] { null, "6/1/15" }, true);
            source.LoadDataRow(new object[] { null, "6/2/15" }, true);
            source.LoadDataRow(new object[] { null, "6/3/15" }, true);
            source.LoadDataRow(new object[] { null, "6/4/15" }, true);
            source.LoadDataRow(new object[] { null, "6/5/15" }, true);

            this.radChartView1.DataSource = source;

            SteplineSeries previousGoalSeries = new SteplineSeries();
            previousGoalSeries.DataSource = source;
            previousGoalSeries.ValueMember = "PreviousGoal";
            this.radChartView1.Series.Add(previousGoalSeries);

            SteplineSeries previousGoalSeries1 = new SteplineSeries();
            previousGoalSeries1.DataSource = source;
            previousGoalSeries1.ValueMember = "CurrentCategory";
            this.radChartView1.Series.Add(previousGoalSeries1);

            this.radChartView1.ShowTrackBall = true;

        }

Workaround: add the series with null values last
public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();

        DataTable source = new DataTable();
        source.Columns.Add("PreviousGoal", typeof(decimal));
        source.Columns.Add("CurrentCategory", typeof(System.DateTime));

        source.LoadDataRow(new object[] { null, "6/1/15" }, true);
        source.LoadDataRow(new object[] { null, "6/2/15" }, true);
        source.LoadDataRow(new object[] { null, "6/3/15" }, true);
        source.LoadDataRow(new object[] { null, "6/4/15" }, true);
        source.LoadDataRow(new object[] { null, "6/5/15" }, true);

        this.radChartView1.DataSource = source;
        SteplineSeries previousGoalSeries1 = new SteplineSeries();
        previousGoalSeries1.DataSource = source;
        previousGoalSeries1.ValueMember = "CurrentCategory";
        this.radChartView1.Series.Add(previousGoalSeries1);

        SteplineSeries previousGoalSeries = new SteplineSeries();
        previousGoalSeries.DataSource = source;
        previousGoalSeries.ValueMember = "PreviousGoal";
        this.radChartView1.Series.Add(previousGoalSeries);

        this.radChartView1.ShowTrackBall = true;
    }
}