Please refer to the following code snippet: 

        Dim root As New RadTreeNode()
        root.Expanded = True
        root.Text = "Root"
        root.Name = "Root"
        Me.RadTreeView1.Nodes.Add(root)
        Dim telerikTreeNode = New RadTreeNode With
        {
            .Expanded = True,
            .Name = "Child1",
            .Text = "Child1",
            .Tag = "test",
            .Font = New Font("Arial", 12.0F, FontStyle.Regular)
        }

        Me.RadTreeView1.Nodes("Root").Nodes.Add(telerikTreeNode)
        For index = 2 To 5
            Dim child As New RadTreeNode()
            child.Text = "Child" & index
            Me.RadTreeView1.Nodes("Root").Nodes.Add(child)
        Next

When adding a new document to the same instance of a RichTextEditor, the UIProviderRegistry instance of the RichTextBox will keep a dictionary entry for a SectionLayoutBox that contains a reference to a non cleaned up WaterMarkUiProvider.

This SectionLayoutBox in turn has a reference to a DocumentLayoutBox (parent) which has a reference to an old document instance.

A new dictionary entry is added and (retained) for every document loaded.

Disposing the old document makes no difference.

In English: "dog's" is marked as incorrect

In French: "L'ordinateur" is marked as incorrect

1. Add a CommandBarDropDownButton with one RadMenuItem and one RadMenuButtonItem

2. Set the same SvgImage for both items and set the DisplayStyle to Image.

3. If you run the project, you will notice that the RadMenuItem shows the SVG, but the RadMenuButtonItem doesn't show it. 

Workaround: set the RadMenuButtonItem.ButtonElement.SvgImage

Please use the attached sample project.

Result in 2021.1.326:

Result in 2021.2.511

To reproduce:

1. Set your monitor DPI to 200%(or any order value different from 100%). You need to Log off(or restart) in order to apply correctly the new DPI settings.
2. Create a UserControl with some RadControls inside.
3. Add the UserControl at design time as a child control to a RadForm.
4. Run the RadForm and you will see that the controls inside the user control are scaled twice.

Workaround:

In the OnLoad method of RadForm do through all nested RadControls inside the UserControl and downscale them to the same DPI as the RadForm.

1. To reproduce use an image with horizontal and/or vertical resolution different from 96.
2. Open with with RadImageEditor.
3. Check this.radImageEditor.CurrentBitmap.HorizontalResolution and you will see that it has a value of 96.

Follow the steps:

1.Group by Description.

2. Expand the groups

3. Sort by Id

4. Try expanding the hierarchical level. You will notice that some of the rows disappear.

Please refer to the attached gif file illustrating the steps for replicating the issue.

Please refer to the attached sample project and the gif file. You will notice that when resizing the grid, in certain cases unnecessary horizontal scrollbar appears.

The writing-mode attribute is ignored when rendering RadSvgImage. 
Here is a sample SVG:

<svg width="200" height="200" viewBox="0 0 200 200" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:svg="http://www.w3.org/2000/svg">
<g>
    <text style="font-size:20px;writing-mode:tb;" x="30" y="30">
        Vertical text
    </text>
    <text style="font-size:20px;writing-mode:vertical-lr;" x="50" y="50">
        Text 2
    </text>
</g>
</svg>

To reproduce:

- .NET Core version: 3.1

- Visual Studio 2022: Version 17.0.0 Preview 7.0

 - Telerik UI for WinForms version: 2021.3.1019-hotfix

1. Create a new Excel-Inspared template project.

2. Select the Review tab and the Properties section try to open the Items collection.

The attached Error.gif illustrates the steps.

Workaround: use the Smart tag (see SmartTag.gif)

Please use the following code snippet:

    public partial class Form1 : Form
    {
        public class VM
        {
            public string Text
            {
                get; set;
            }
            public DateTime Start
            {
                get; set;
            }
            public DateTime End
            {
                get; set;
            }
        }

        public Form1()
        {
            InitializeComponent();

            var ViewModel = new VM[]
            {
                new VM()
                {
                    Text = "CrashTest",
                    Start = new DateTime(2021, 11, 3, 10, 0, 0),
                    End = new DateTime( 2021, 11, 3, 23, 0, 0 )  //crash
                    //End = new DateTime( 2021, 11, 3, 22, 0, 0 )  //No crash
                },
            };

            radGanttView1.GanttViewElement.GraphicalViewElement.OnePixelTime = new TimeSpan( 0, 1, 0 );
            radGanttView1.GanttViewElement.GraphicalViewElement.TimelineStart = ViewModel.Min( T => T.Start );
            radGanttView1.GanttViewElement.GraphicalViewElement.TimelineEnd = ViewModel.Max( T => T.End );
            radGanttView1.GanttViewElement.GraphicalViewElement.TimelineRange = TimeRange.Day;

            radGanttView1.GanttViewElement.ChildMember = "Text";
            radGanttView1.GanttViewElement.TitleMember = "Text";
            radGanttView1.GanttViewElement.StartMember = "Start";
            radGanttView1.GanttViewElement.EndMember = "End";

            radGanttView1.DataSource = ViewModel;
        }
    }

Currently, the possible solution that I can suggest is to increase the view's end with 1 hour:

  radGanttView1.GanttViewElement.GraphicalViewElement.TimelineEnd = ViewModel.Max( T => T.End.AddHours(1));

Workaround: set the RadRibbonFormBehavior1.AllowTheming property of the form to false

public class RadForm1
{
	public RadForm1()
	{
		InitializeComponent();

		this.RadRibbonFormBehavior1.AllowTheming = false;

	}
}

There are situations where SelectedRows won't return the number of rows preselected when using Begin/EndUpdate even though it seems like there's a row selected in the UI. By preselected I mean the row that looks selected after the rows has been added. This bug has caused some problems for us because the user tried some action on a row they thought was preselected and it would fail.

One situation I found where this bug can be reproducted is by using SortOrder in combination of Begin/EndUpdate. There are probably more situations but I hope this one will let you find the underlying bug.

The attached project contains a simple form with a RadGridView which will contain a list of persons. The list is populated by this method:

public void PopulateGridView(List<Person> persons)
{
	PersonGridView.BeginUpdate();
	PersonGridView.DataSource = persons;
	PersonGridView.EndUpdate();
	PersonGridView.Columns[nameof(Person.LastName)].SortOrder = RadSortOrder.Ascending;
}

There are two buttons: "Step one" and "Step two". The first will mimick a situation where the user search a database for persons and none will be found. By clicking the "Get selected rows" you will see that the SelectedRows will return zero rows which is correct.
But when you afterwards click "Step two" (which will add five rows) it seems like there's one row preselected. I would expect the SelectedRows to return that row but by clicking "Get selected rows" again you will see that the returned rows are zero still. The CurrentRow, however is set to the preselected row as expected.
If you start by clicking "Step two" the SelectedRows actually returns the correct rows. Quite strange :-)

I know this is a very small issue and can be avoided. But as I mentioned there are other situations where this problem occurs and it's quite hard to figure out exactly what causes it.

Thank you for your help.

Best regards
Ulrik Skovenborg

To reproduce:

1. Add a RadChat to the form and assign a default author to it:

Me.RadChat1.Author = New Author(My.Resources.AnneDodsworth, "Nancy")

2. Add multiple messages to get a vertical scrollbar and try to scroll fast up and down. Please refer to the attached gif file illustrating the steps.