Use attached to reproduce (remove the custom strategy that serves as a workaround)

Please run the attached sample project.

Stack trace:
System.NullReferenceException occurred
  HResult=-2147467261
  Message=Object reference not set to an instance of an object.
  Source=Telerik.WinControls.ChartView
  StackTrace:
       at Telerik.Charting.CombinedBarSeriesRoundLayoutStrategy.ApplyLayoutRoundingVertical(LayoutContext context) in c:\Work\Development\RadControls\RadChartView\Engine\Series\Combination\BarSeries\CombinedBarSeriesRoundLayoutStrategy.cs:line 206
  InnerException: 

Inside the constructor of a form create a pie series and populate it with data. Then add it to a RadChartView. You will notice that there are two legend items per data point.

Use attached to reproduce. 

Workaround:

series.DataPoints.Add(new PieDataPoint(0.01, "Germany"));
series.DataPoints.Add(new PieDataPoint(0.01, "United States"));

 

To reproduce:
- Just add StochasticSlowIndicator to a chart.

To reproduce:

1. Perform zoom and pan operation and click the print/print preview button:
2. You will notice that the printed chart is not exactly the same as the displayed one. Please refer to the attached screenshot.

public Form1()
{
    InitializeComponent();

    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"));
    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"));
    this.radChartView1.Series.Add(lineSeries2);

    ChartPanZoomController panZoomController = new ChartPanZoomController();
    panZoomController.PanZoomMode = ChartPanZoomMode.Horizontal;
    radChartView1.Controllers.Add(panZoomController);
}

private void radButton1_Click(object sender, EventArgs e)
{
    this.radChartView1.PrintPreview();
}

3.The issue also appears when the LassoZoomController is used.
 

After 1 million the decimal places of the labels are not correct, In your image. the labels on the horizontal axis go 999,992.50 - 999,995.00 - 999,997.5 -  1,000,000.00 - *1,000,003.00(should be 1,000,002.50) - 1,000,005.00 - *1,000,008.00(should be 1,000,007.5)

To reproduce:
- Add a chart to the form and set series with DataSource
- Close and dispose the form

Workaround:
Set the DataSource property of the series to null prior closing.

To reproduce:
            WaterfallSeries series = new WaterfallSeries();
            series.ShowLabels = true;

            series.DataPoints.Add(new WaterfallDataPoint(50000, false, false, "Beginning\nBalance"));
            series.DataPoints.Add(new WaterfallDataPoint(17000, false, false, "Jan"));
            series.DataPoints.Add(new WaterfallDataPoint(14000, false, false, "Feb"));
            series.DataPoints.Add(new WaterfallDataPoint(-12000, false, false, "Mar"));
            series.DataPoints.Add(new WaterfallDataPoint(69000, true, false, "Q1"));
            series.DataPoints.Add(new WaterfallDataPoint(-22000, false, false, "Apr"));
            series.DataPoints.Add(new WaterfallDataPoint(-18000, false, false, "May"));
            series.DataPoints.Add(new WaterfallDataPoint(500, false, false, "Jun"));
            series.DataPoints.Add(new WaterfallDataPoint(-30000, true, false, "Q2"));
            series.DataPoints.Add(new WaterfallDataPoint(39000, false, true, "Ending\nBalance"));
            this.radChartView1.Series.Add(series);

            CartesianGridLineAnnotation annotation1 = new CartesianGridLineAnnotation();
            annotation1.Label = "Annotation";
            annotation1.ForeColor = Color.Lime;
            annotation1.BackColor = Color.Black;
            this.radChartView1.Annotations.Add(annotation1);

Workaround:

        public RadForm1()
        {
            InitializeComponent();
            this.radChartView1.CreateRenderer += radChartView1_CreateRenderer;

            WaterfallSeries series = new WaterfallSeries();
            series.ShowLabels = true;
     
            series.DataPoints.Add(new WaterfallDataPoint(50000, false, false, "Beginning\nBalance"));
            series.DataPoints.Add(new WaterfallDataPoint(17000, false, false, "Jan"));
            series.DataPoints.Add(new WaterfallDataPoint(14000, false, false, "Feb"));
            series.DataPoints.Add(new WaterfallDataPoint(-12000, false, false, "Mar"));
            series.DataPoints.Add(new WaterfallDataPoint(69000, true, false, "Q1"));
            series.DataPoints.Add(new WaterfallDataPoint(-22000, false, false, "Apr"));
            series.DataPoints.Add(new WaterfallDataPoint(-18000, false, false, "May"));
            series.DataPoints.Add(new WaterfallDataPoint(500, false, false, "Jun"));
            series.DataPoints.Add(new WaterfallDataPoint(-30000, true, false, "Q2"));
            series.DataPoints.Add(new WaterfallDataPoint(39000, false, true, "Ending\nBalance"));
            this.radChartView1.Series.Add(series);
 
            CartesianGridLineAnnotation annotation1 = new CartesianGridLineAnnotation();
            annotation1.Label = "Annotation";
            annotation1.ForeColor = Color.Lime;
            annotation1.BackColor = Color.Black;
            annotation1.PositonOffset = new SizeF(0, -20);
            annotation1.Axis = this.radChartView1.Axes[1] as CartesianAxis;
            annotation1.Value = 70000;
            annotation1.BorderColor = Color.Red;
            annotation1.BorderDashStyle = DashStyle.Solid;
            annotation1.BorderWidth = 1;
            this.radChartView1.Annotations.Add(annotation1);
        }

        private void radChartView1_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
        {
            e.Renderer = new CustomCartesianRenderer(e.Area as CartesianArea);
        }
 
        public class CustomCartesianRenderer : CartesianRenderer
        {
            public CustomCartesianRenderer(CartesianArea area) : base(area)
            {
            }
 
            protected override void Initialize()
            {
                base.Initialize();
                for (int i = 0; i <= this.DrawParts.Count - 1; i++)
                {
                    CartesianGridLineAnnotationDrawPart annotationPart = this.DrawParts[i] as CartesianGridLineAnnotationDrawPart;
                    if (annotationPart != null)
                    {
                        this.DrawParts[i] = new CustomCartesianGridLineAnnotationDrawPart((CartesianGridLineAnnotation)annotationPart.Element, this);
                    }
                }
            }
        }

        public class CustomCartesianGridLineAnnotationDrawPart : CartesianGridLineAnnotationDrawPart
        {
            public CustomCartesianGridLineAnnotationDrawPart(CartesianGridLineAnnotation element, CartesianRenderer renderer) : base(element, renderer)
            {
            }

            public override void Draw()
            {
                FieldInfo fi = typeof(CartesianGridLineAnnotation).GetField("model", BindingFlags.NonPublic | BindingFlags.Instance);
                ChartAnnotationModel model = fi.GetValue(this.Element) as ChartAnnotationModel;
                RectangleF
                rect = ChartRenderer.ToRectangleF(model.LayoutSlot);
                rect.Offset(this.ViewportOffsetX, this.ViewportOffsetY);

                Graphics graphics = this.Renderer.Surface as Graphics;
                RadGdiGraphics radGraphics = new RadGdiGraphics(graphics);

                Rectangle clipRect = ChartRenderer.ToRectangle(this.Element.View.GetArea<CartesianArea>().AreaModel.PlotArea.LayoutSlot);
                clipRect.Offset((int)this.ViewportOffsetX, (int)this.ViewportOffsetY);
                graphics.SetClip(clipRect);

                GraphicsPath path = new GraphicsPath();
                path.AddLine(rect.Location, new PointF(rect.Right, rect.Bottom));

                BorderPrimitiveImpl border = new BorderPrimitiveImpl(this.Element, null);
                border.PaintBorder(radGraphics, null, path, rect);

                rect.Size = graphics.MeasureString(this.Element.Label, this.Element.Font);
                rect.Offset(this.Element.PositonOffset.Width + 1, this.Element.PositonOffset.Height + 1);

                TextParams tp = new TextParams();
                tp.font = this.Element.Font;
                tp.foreColor = this.Element.ForeColor;
                tp.paintingRectangle = rect;
                tp.text = this.Element.Label;

                FillPrimitiveImpl fill = new FillPrimitiveImpl(this.Element, null);
                fill.PaintFill(radGraphics, null, rect);
            
                TextPrimitiveHtmlImpl text = new TextPrimitiveHtmlImpl();
                text.PaintPrimitive(radGraphics, 0f, new SizeF(1f, 1f), tp);
            }
        }

To reproduce: please refer to the attached sample project  and gif file illustrating the behavior on my end. 

Note: similar to the axis, the series should also have ClipLabels property which will control whether the labels will be clipped or not.

Workaround: use custom renderer:

 Sub New()

        InitializeComponent() 

        AddHandler Me.RadChartView1.CreateRenderer, AddressOf RadChartView1_CreateRenderer

        Dim barSeries As New Telerik.WinControls.UI.BarSeries("Performance", "RepresentativeName")
        barSeries.Name = "Q1"
        barSeries.ShowLabels = True
        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)
        Dim barSeries2 As New Telerik.WinControls.UI.BarSeries("Performance", "RepresentativeName")
        barSeries2.Name = "Q2"
        barSeries2.ShowLabels = True
        barSeries2.DataPoints.Add(New CategoricalDataPoint(153, "Harley"))
        barSeries2.DataPoints.Add(New CategoricalDataPoint(141, "White"))
        barSeries2.DataPoints.Add(New CategoricalDataPoint(130, "Smith"))
        barSeries2.DataPoints.Add(New CategoricalDataPoint(88, "Jones"))
        barSeries2.DataPoints.Add(New CategoricalDataPoint(109, "Marshall"))
        Me.RadChartView1.Series.Add(barSeries2)


        Dim lassoZoomController As New ChartPanZoomController()
        RadChartView1.Controllers.Add(lassoZoomController)

    End Sub
    
    Public Class CustomLabelElementDrawPart
        Inherits BarLabelElementDrawPart
        Public Sub New(owner As ChartSeries, renderer As IChartRenderer)
            MyBase.New(owner, renderer)

        End Sub

        Public Overrides Sub Draw()
            If Not Me.Element.ShowLabels Then
                Return
            End If

            Dim graphics As Graphics = TryCast(Me.Renderer.Surface, Graphics)
            Dim radGraphics As RadGdiGraphics = New RadGdiGraphics(graphics)
            Dim isSmartLabelsEnabled As Boolean = Me.Element.View.ShowSmartLabels
            Dim isLineToLabelEnabled As Boolean = Me.Element.DrawLinesToLabels

            For Each dataPointElement As DataPointElement In Me.Element.Children
                Dim categoricalDataPoint As CategoricalDataPoint = TryCast(dataPointElement.DataPoint, CategoricalDataPoint)


                For i As Integer = 0 To dataPointElement.Children.Count - 1
                    Dim labelElement As LabelElement = TryCast(dataPointElement.Children(i), LabelElement)

                    If labelElement Is Nothing Then
                        Continue For
                    End If

                    labelElement.OnLabelFormatting(New ChartViewLabelFormattingEventArgs(labelElement))

                    If Not labelElement.IsVisible OrElse String.IsNullOrEmpty(labelElement.Text) Then
                        Continue For
                    End If

                    Dim rect As Rectangle
                    Dim slot As RadRect = labelElement.GetLayoutSlot()

                    If isSmartLabelsEnabled AndAlso labelElement.SmartRectangle <> Rectangle.Empty Then
                        rect = labelElement.SmartRectangle
                    Else
                        slot = AdjustLayoutSlot(slot, labelElement.DataPointElement)
                        rect = ChartRenderer.ToRectangle(slot)
                    End If

                    Dim state As Object = radGraphics.SaveState()
                    Dim horizontalTranslate As Integer = rect.X + rect.Width / 2
                    Dim verticalTranslate As Integer = rect.Y + rect.Height / 2
                    Dim clipRect As RectangleF
                    If TypeOf Me.Renderer Is CartesianRenderer Then
                        Dim size As SizeF = graphics.MeasureString("W", Me.Element.Font)
                        Dim plotRect As RadRect = Me.Element.Model.LayoutSlot
                        plotRect.X += Me.ViewportOffsetX
                        plotRect.Y += Me.ViewportOffsetY
                        clipRect = ChartRenderer.ToRectangleF(plotRect)
                        clipRect.Y -= size.Height / 2.0F
                        clipRect.Height += size.Height
                        clipRect.Width += size.Width * 2.0F
                        graphics.SetClip(clipRect)
                    End If

                    Dim angle As Single = CSng(Me.Element.LabelRotationAngle) Mod 360.0F

                    If angle <> 0 Then
                        radGraphics.TranslateTransform(horizontalTranslate, verticalTranslate)
                        radGraphics.RotateTransform(angle)
                        radGraphics.TranslateTransform(-horizontalTranslate, -verticalTranslate)
                    End If

                    If isLineToLabelEnabled Then
                        Me.DrawConnectingLine(radGraphics, labelElement, dataPointElement, isSmartLabelsEnabled AndAlso labelElement.SmartRectangle <> Rectangle.Empty)
                    End If

                    If labelElement.BackgroundShape IsNot Nothing Then
                        labelElement.BackgroundShape.Paint(CType(radGraphics.UnderlayGraphics, Graphics), rect)
                    End If

                    Dim fill As Telerik.WinControls.Primitives.FillPrimitiveImpl = New Telerik.WinControls.Primitives.FillPrimitiveImpl(labelElement, Nothing)
                    fill.PaintFill(radGraphics, 0, System.Drawing.Size.Empty, rect)
                    Dim border As Telerik.WinControls.Primitives.BorderPrimitiveImpl = New Telerik.WinControls.Primitives.BorderPrimitiveImpl(labelElement, Nothing)
                    border.PaintBorder(radGraphics, 0, System.Drawing.Size.Empty, rect)

                    Using brush As Brush = New SolidBrush(labelElement.ForeColor)
                        Dim drawRectangle As RectangleF = New RectangleF()
                        drawRectangle.X = rect.X + labelElement.Padding.Left
                        drawRectangle.Y = rect.Y + labelElement.Padding.Top
                        drawRectangle.Width = rect.Width - labelElement.Padding.Right
                        drawRectangle.Height = rect.Height - labelElement.Padding.Bottom
                        Dim format As StringFormat = New StringFormat()
                        format.Alignment = ContentAlignmentToHorizontalStringAlignment(labelElement.TextAlignment)
                        format.LineAlignment = Me.ContentAlignmentToVerticalStringAlignment(labelElement.TextAlignment)
                        graphics.DrawString(labelElement.Text, labelElement.Font, brush, drawRectangle, format)
                    End Using

                    If angle <> 0 Then
                        radGraphics.ResetTransform()
                        radGraphics.RestoreState(state)
                    End If

                    graphics.ResetClip()
                Next
            Next
        End Sub

        Public Function ContentAlignmentToVerticalStringAlignment(ByVal contentAlignment As ContentAlignment) As StringAlignment
            Dim result As StringAlignment

            Select Case contentAlignment
                Case contentAlignment.BottomCenter, contentAlignment.BottomLeft, contentAlignment.BottomRight
                    result = StringAlignment.Far
                Case contentAlignment.TopCenter, contentAlignment.TopLeft, contentAlignment.TopRight
                    result = StringAlignment.Near
                Case Else
                    result = StringAlignment.Center
            End Select

            Return result
        End Function

        Private Function ContentAlignmentToHorizontalStringAlignment(ByVal contentAlignment As ContentAlignment) As StringAlignment
            Dim result As StringAlignment

            Select Case contentAlignment
                Case contentAlignment.BottomLeft, contentAlignment.MiddleLeft, contentAlignment.TopLeft
                    result = StringAlignment.Near
                Case contentAlignment.BottomRight, contentAlignment.MiddleRight, contentAlignment.TopRight
                    result = StringAlignment.Far
                Case Else
                    result = StringAlignment.Center
            End Select

            Return result
        End Function

    End Class

    Private Sub RadChartView1_CreateRenderer(sender As Object, e As ChartViewCreateRendererEventArgs)
        e.Renderer = New CustomCartesianRenderer(e.Area)
    End Sub

    Public Class CustomCartesianRenderer
        Inherits CartesianRenderer
        Public Sub New(area As CartesianArea)
            MyBase.New(area)
        End Sub
        Protected Overrides Sub Initialize()
            MyBase.Initialize()
            For i As Integer = 0 To Me.DrawParts.Count - 1

                Dim label As BarLabelElementDrawPart = TryCast(Me.DrawParts(i), BarLabelElementDrawPart)
                If (label IsNot Nothing) Then
                    Me.DrawParts(i) = New CustomLabelElementDrawPart(label.Element, Me)
                End If
            Next
        End Sub
    End Class

How to reproduce:
private void UpdateChart()
{
    this.radChartView1.Series.Clear();

    // Create two series for the bar chart.
    BarSeries requiredBarSeries = new BarSeries
    {
        ShowLabels = true,
        CombineMode = ChartSeriesCombineMode.Cluster,
        NumberOfColors = 2,
    };

    BarSeries actualBarSeries = new BarSeries
    {
        ShowLabels = true,
        CombineMode = ChartSeriesCombineMode.Cluster,
        NumberOfColors = 2,
    };
    
    // Add the data. 
    AddDataPoint(requiredBarSeries, .0333d, "Germany", "Required");
    AddDataPoint(actualBarSeries, .050d, "Germany", "Actual");
    AddDataPoint(requiredBarSeries, .0333d, "United States", "Required");
    AddDataPoint(actualBarSeries, .050d, "United States", "Actual");
    AddDataPoint(requiredBarSeries, .00d, "France", "Required");
    AddDataPoint(actualBarSeries, .050d, "France", "Actual");

    AddDataPoint(requiredBarSeries, 0.0d, "United Kingdom", "Required");
    AddDataPoint(actualBarSeries, .050d, "United Kingdom", "Actual");


    AddDataPoint(requiredBarSeries, 0.955d, "Russia", "Required");
    // Change the following value to .95d to see 
    // the issue.
    AddDataPoint(actualBarSeries, .15d, "Russia", "Actual");

    this.radChartView1.Series.Add(requiredBarSeries);
    this.radChartView1.Series.Add(actualBarSeries);

    CategoricalAxis horizontalAxis = radChartView1.Axes[0] as CategoricalAxis;
    horizontalAxis.LabelFitMode = AxisLabelFitMode.MultiLine;
}

private void AddDataPoint(BarSeries series, double val, string category, string label)
{
    series.DataPoints.Add(new CategoricalDataPoint
    {
        Value       = val,
        Label       = String.Format("{0}\n{1:P2}", label, val),
        Category    = category
    });
}

Workaround: create a custom SmartLabelsController
public RadForm1()
        {
            InitializeComponent();


            SmartLabelsController labelsController = new CustomSmartLabelsController();
            this.radChartView1.Controllers.Add(labelsController);
     
            // Set up the chart
        }

public class CustomSmartLabelsController : SmartLabelsController
    {
        protected override SmartLabelsStrategyBase GetDefaultStrategy(ChartArea area)
        {
            SmartLabelsStrategyBase strategy = base.GetDefaultStrategy(area);

            if (strategy is VerticalAdjusmentLabelsStrategy)
            {
                strategy = new CustomVerticalAdjusmentLabelsStrategy();
                Dictionary<Type, List<Type>> strategies = typeof(SmartLabelsController).GetField("strategySeries", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).GetValue(this) as Dictionary<Type, List<Type>>;
                strategies.Remove(typeof(VerticalAdjusmentLabelsStrategy));
                strategies.Add(typeof(CustomVerticalAdjusmentLabelsStrategy), new List<Type> { typeof(BarSeries), typeof(LineSeriesBase) });
            }

            return strategy;
        }
    }

    public class CustomVerticalAdjusmentLabelsStrategy : VerticalAdjusmentLabelsStrategy
    {
        public override void CalculateLocations(ChartSeriesCollection series, Rectangle plotArea)
        {
            if (series.Count == 0)
            {
                return;
            }

            List<LabelElement> labels = new List<LabelElement>();
            List<int> overlaps = new List<int>();

            foreach (ChartSeries chartSeries in series)
            {
                if (!chartSeries.ShowLabels || !chartSeries.IsVisible)
                {
                    continue;
                }

                foreach (DataPointElement point in chartSeries.Children)
                {
                    LabelElement label = (LabelElement)point.Children[0];
                    Rectangle labelRect = ChartRenderer.ToRectangle(label.GetLayoutSlot());
                    labelRect.X += (int)(series[0].View.Viewport.X + ((IChartView)series[0].View).PlotOriginX);
                    labelRect.Y += (int)(series[0].View.Viewport.Y + ((IChartView)series[0].View).PlotOriginY);

                    if (chartSeries.View.GetArea<CartesianArea>().Orientation == Orientation.Vertical)
                    {
                        labelRect.Y -= this.DistanceToLabel;
                    }
                    else
                    {
                        labelRect.X += this.DistanceToLabel;
                    }

                    labelRect.Inflate(0, this.DistanceBetweenLabels);

                    label.SmartRectangle = labelRect;
                    labels.Add(label);
                }
            }

            CartesianSeries cartesianSeries = (CartesianSeries)series[0];

            if (cartesianSeries != null)
            {
                this.RestrictWithinAxes(labels, cartesianSeries);
            }

            LabelElement labelToMove = this.GetElementWithMostOverlaps(labels, series);
            int counter = 0;

            while (labelToMove != null && counter < labels.Count)
            {
                Rectangle firstDirectionRect;
                Rectangle secondDirectionRect;
                int firstMoveCost;
                int secondMoveCost;

                Rectangle dataPointLayout = ChartRenderer.ToRectangle(labelToMove.DataPoint.LayoutSlot);
                dataPointLayout.X += (int)labelToMove.View.Viewport.X;
                dataPointLayout.Y += (int)labelToMove.View.Viewport.Y;

                if (cartesianSeries.View.GetArea<CartesianArea>().Orientation == System.Windows.Forms.Orientation.Vertical)
                {
                    firstDirectionRect = this.GetBestPositionInUpwardDirection(labels, labelToMove, cartesianSeries);
                    secondDirectionRect = this.GetBestPositionInDownwardDirection(labels, labelToMove, cartesianSeries);

                    firstMoveCost = Math.Abs(labelToMove.SmartRectangle.Y - firstDirectionRect.Y);
                    secondMoveCost = Math.Abs(labelToMove.SmartRectangle.Y - secondDirectionRect.Y);
                }
                else
                {
                    firstDirectionRect = this.GetBestPositionInLeftDirection(labels, labelToMove, cartesianSeries);
                    secondDirectionRect = this.GetBestPositionInRightDirection(labels, labelToMove, cartesianSeries);

                    firstMoveCost = Math.Abs(dataPointLayout.X - firstDirectionRect.X);
                    secondMoveCost = Math.Abs(dataPointLayout.X - secondDirectionRect.X);
                }

                if (!dataPointLayout.IntersectsWith(secondDirectionRect) && firstMoveCost > secondMoveCost)
                {
                    labelToMove.SmartRectangle = secondDirectionRect;
                }
                else
                {
                    labelToMove.SmartRectangle = firstDirectionRect;
                }

                labelToMove = this.GetElementWithMostOverlaps(labels, series);
                counter++;
            }

            this.FinalPositionsOptimization(labels);

            foreach (LabelElement label in labels)
            {
                Rectangle rect = label.SmartRectangle;
                rect.Inflate(0, -this.DistanceBetweenLabels);

                Rectangle dataPointLayout = ChartRenderer.ToRectangle(label.DataPoint.LayoutSlot);
                dataPointLayout.X += (int)cartesianSeries.View.Viewport.X;
                dataPointLayout.Y += (int)cartesianSeries.View.Viewport.Y;
                int delta = 1;

                if (dataPointLayout.Y > label.SmartRectangle.Y)
                {
                    delta = -1;
                }

                rect.Y += delta * this.DistanceToLabel;
                label.SmartRectangle = rect;
            }
        }
    }

Use attached to reproduce (comment the custom strategy).

Workaround: in the attched project. 
  

To reproduce: run the attached sample project and you will notice that the data points are not properly aligned.

Workaround: use equal number of data points for the series.

To reproduce:
- The total amount should go bellow 0 with the last point:

var ws = new WaterfallSeries();
ws.ShowLabels = true;
ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(10.0, false, false));
ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(2.0, false, false));
ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(3.0, false, false));

ws.DataPoints.Add(new Telerik.Charting.WaterfallDataPoint(-20.0, false, false));

radChartView1.Series.Add(ws);

Workaround:
Set the minimum:
var verticalAxis = radChartView1.Axes[1] as LinearAxis;
verticalAxis.Minimum = -10;

How to reproduce:
Check the attached project

Workaround:
Create a separate custom MACD indicator and add it to the chart, uncomment the commented code in the attached project

Friend Class MacdCustomIndicator
    Inherits MacdIndicator

    Private customBorderColor As Color
    Public Property BorderColor() As Color
        Get
            Return customBorderColor
        End Get
        Set(ByVal value As Color)
            customBorderColor = value
            Me.ChildIndicator.BorderColor = value
        End Set
    End Property

    Sub New()
        Dim customMacdInnerIndicator = New CustomMacdInnerIndicator(Me)
        Me.GetType().BaseType.GetField("childIndicator", BindingFlags.Instance Or BindingFlags.NonPublic).SetValue(Me, customMacdInnerIndicator)
    End Sub

End Class

Friend Class CustomMacdInnerIndicator
    Inherits MacdInnerIndicator
    Public Sub New(owner As MacdIndicator)
        MyBase.New(owner)
    End Sub

    Public Overrides Function GetProcessedValue(currentIndex As Integer) As Double

        Dim macd As Double = Me.CalculateMacdValue(currentIndex, LongPeriod, ShortPeriod)
        Me.Cache(macdValues).Add(currentIndex, macd)
        Return macd
    End Function
End Class

How to reproduce: the issue can be observed when opening a form with a RadChartView which is not visible located in RadScrollablePanel. The panel will scroll to the chart which is not desired

Workaround: 
public partial class RadForm1 : Telerik.WinControls.UI.RadForm
{
    public RadForm1()
    {
        InitializeComponent();

        this.radScrollablePanel1.AllowAutomaticScrollToControl = false;
    }

    protected override void OnVisibleChanged(EventArgs e)
    {
        base.OnVisibleChanged(e);

        this.radScrollablePanel1.HorizontalScrollbar.Value = 0;;
    }
}

Use attached to reproduce.

Workaround:
private void radChartView1_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
{
    e.Renderer = new CustomCartesianRenderer(e.Area as CartesianArea);
}

public class CustomCartesianRenderer : CartesianRenderer
{
    public CustomCartesianRenderer(CartesianArea area) : base(area)
    {
    }

    protected override void Initialize()
    {
        base.Initialize();
        for (int i = 0; i < this.DrawParts.Count; i++)
        {
            LineSeriesDrawPart linePart = this.DrawParts[i] as LineSeriesDrawPart;
            if (linePart != null)
            {
                this.DrawParts[i] = new CustomLineSeriesDrawPart((LineSeries)linePart.Element, this);
            }
        }
    }

    
}
public class CustomLineSeriesDrawPart : LineSeriesDrawPart
{
    public CustomLineSeriesDrawPart(LineSeriesBase series, IChartRenderer renderer) : base(series, renderer)
    {
    }

    protected override PointF[] GetPointsPositionsArray()
    {
        List<DataPoint> points = new List<DataPoint>(this.Element.DataPoints);

        PointF[] result = new PointF[points.Count];

        for (int i = 0; i < points.Count; i++)
        {
            result[i] = new PointF(this.OffsetX + (float)points[i].LayoutSlot.X, this.OffsetY + (float)points[i].LayoutSlot.Y);
        }

        return result;
    }

}

Use attached to reproduce. 
If you add 163 points the axis will start from 3. There should be an option to start from 0.

To reproduce:
            DataTable table = new DataTable();
            table.Columns.Add("Value", typeof(double));
            table.Columns.Add("Name", typeof(string));
            table.Rows.Add(1, "John");
            table.Rows.Add(3, "Adam");
            table.Rows.Add(5, "Peter");
            table.Rows.Add(12, "Sam");
            table.Rows.Add(6, "Paul");

            BarSeries lineSeria = new BarSeries();
            radChartView1.Series.Add(lineSeria);
            lineSeria.ValueMember = "Value";
            lineSeria.CategoryMember = "Name";

            this.radChartView1.DataSource = table;

        private void radButton1_Click(object sender, EventArgs e)
        { 
            this.radChartView1.DataSource = null; 
        }

The chart data will be still visible. It is necessary to set explicitly the DataSource of the series:
this.radChartView1.Series[0].DataSource = null;

To reproduce:
- Add a polar chart with a selection controller.
- Click near the bottom right corner of the point (10 pixels away)
- The point is selected.

Workaround:
private void Chart_CreateRenderer(object sender, ChartViewCreateRendererEventArgs e)
{
    e.Renderer = new MyPolarRenderer(e.Area as PolarArea);
}


class MyPolarRenderer : PolarRenderer
{
    public MyPolarRenderer(PolarArea area) : base(area)
    { }

    protected override void Initialize()
    {
        base.Initialize();
        for (int i = 0; i < this.DrawParts.Count; i++)
        {
            PolarPointSeriesDrawPart linePart = this.DrawParts[i] as PolarPointSeriesDrawPart;
            if (linePart != null)
            {
                this.DrawParts[i] = new MyDrawpart((PolarPointSeries)linePart.Element, this);
            }
        }
    }


}
class MyDrawpart : PolarPointSeriesDrawPart
{
    public MyDrawpart(PolarPointSeries series, IChartRenderer renderer) : base(series, renderer)
    { }
    public override DataPoint HitTest(Point location)
    {
        if (this.Element.PointSize.Width == 0 || this.Element.PointSize.Height == 0)
        {
            return null;
        }

        for (int i = 0; i < this.Element.DataPoints.Count; i++)
        {
            RadRect slot = this.Element.DataPoints[i].LayoutSlot;
            float pointHalfWidth = this.Element.PointSize.Width / 2;
            float pointHalfHeight = this.Element.PointSize.Height / 2;

            RectangleF dataPointBounds = new RectangleF((float)(slot.X - pointHalfWidth), (float)(slot.Y - pointHalfHeight), this.Element.PointSize.Width, this.Element.PointSize.Height);

            if (dataPointBounds.Contains(location.X, location.Y))
            {
                return this.Element.DataPoints[i];
            }
        }

        return null;
    }
}