The filter is not updated when the DeferTextChange property is set to True.  The properties set to the control:

<telerik:RadMultiColumnComboBox x:Name="OptionsComboBox"
                                DisplayMemberPath="Name"
                                NullText="Select an option..."
                                CloseDropDownAfterSelectionInput="True"
                                DropDownWidth="440" DropDownHeight="220"
                                Height="32"
                                SelectionBoxesVisibility="Collapsed"
                                AutoCompleteMode="SuggestAppend"
                                ClearSelectionOnDeleteOrBackKey="True"
                                DeferTextChange="True">
. . . . . 

1. Select Banana from the dropdown. It should appear as editable text without the little × button.
2. Reopen the dropdown, so we can se it
3. Click in the middle of banana in the textbox(not the dropdown), then Ctrl+A and type zz.
4. Wait a second, then Ctrl+A, Backspace.

RadVirtualGrid retains pending off-screen PushCellValue values across Reset(), Reset(rowCount, columnCount), and DataProvider replacement. When indices are reused for different data, the first realized cell consumes the stale value instead of retrieving the value from the new DataProvider. A pushed null renders a blank. Scrolling away and back retrieves the correct value. This can display data from a different item once after a dataset change.

ToastNotification integrates with the Windows Notification Platform and displays notifications similar to native Windows 10/11 system toasts. Even though there is another declined request, I believe that it would value to the suite: https://feedback.telerik.com/wpf/1352632-new-control-toast-notification 

Telerik UI for WinForms have both, TostNotification and DesktopAlert.

A Sunburst Chart is a multi-level circular chart used to visualize hierarchical data and part-to-whole relationships.

Borders can overhang 1 px from the corresponding cells. The issue is reproducible only on some zoom levels, and is most probably related to WPF layout rounding. The issue is mostly visible when borders are missing. 

On different zoom levels, different borders are hanging.

Clicking on floating Image when the caret position is not in the viewport, changes the viewport and starts image dragging. Instead, the image should just be selected.

Steps to reproduce:
1. Start with empty document
2. Insert image, make it floating (right-click on it, select Text Wrapping -> In Front Of Text)
3. Drag the image near the bottom of the document.
4. Scroll and, if needed, zoom to such a factor, so that the first paragraph is outside of the view port.
5. Select the image (keep in mind that the image shouldn't be selected - the position should be at some of the previous paragraphs)
Observe: The image dragging adorner is visible and the viewport is changed.
Expected: The behavior shall be the same as MS Word - the viewport shouldn't be changed, and the image should just be selected

When floating image is added to empty table cell, it is positioned in a way that overlaps the table border. 

GoToPage() method is not working correctly in some cases when called in DocumentChanged event handler. The known cases are described below:

   1. When RadPdfViewer and the document are loaded initially and document is set through the RadPdfViewer.Document property.
Workaround: DocumentSource property could be set (in XAML or in code-behind) instead of the Document property. If the Document property is used, this should be done after RadPdfViewer is loaded.

    2. When the ScaleMode is changed in DocumentChanged event handler and then GoToPage() method is called in the same event handler.

When inserting text (document fragment) next to a correctly spelled word they get both underlined as incorrect.

Currently when the text contains consecutive non-space symbols like "~!@#$%^&*()_+=-`[]{};:'"/\|., ", each character is detected as a separate word. Instead, they should be considered one word, including all the subsequent space characters.

The following functionalities should respect this grouping:
- Caret navigation by words (CTRL + left/right arrow), MoveCaret UI command and the corresponding DocumentPosition methods.
- Selecting word by double clicking.

'Decrement paragraph left indent' command can set negative left indent which makes bullets/numbering of a list clipped. Instead, it shouldn't be executed if the bullets/numbering would become invisible.

Workaround: Cancel the command in CommandExecuting event:

            this.radRichTextBox.CommandExecuting += (sender, e) =>
            {
                if (e.Command == this.radRichTextBox.Commands.DecrementParagraphLeftIndentCommand)
                {
                    if (this.radRichTextBox.Document.Selection.GetSelectedParagraphs().Any(p => p.IsInList && p.LeftIndent <= 24))
                    {
                        e.Cancel = true;
                    }
                }
            };

The spacing between the letters is too big.