If nested comments are present in the document, the end users cannot delete the nested one. If they put the caret inside the inner comment, or even inside the balloon associated with the inner comment, and press "Delete Comment", the most outermost comment is deleted instead of the current one.

Workaround is to enumerate the fields and update them separately.
            foreach (var field in this.radRichTextBox.Document.EnumerateChildrenOfType<FieldRangeStart>())
            {
                this.radRichTextBox.UpdateField(field);
            }

Workaround: Caret could be changed with custom implementation. More information could be found in this help article: http://docs.telerik.com/devtools/wpf/controls/radrichtextbox/ime-support#how-to-implement-your-own-ime-support

When an action is executed, say delete, and you perform undo, the text that is inserted back in the control is selected. In RadRichTextBox the end position of the selection is brought into view.

Text containing mixed Right-to-Left and Left-to-Right parts are visualized incorrectly - some of the punctuation marks swap their places.

Partial workaround: Use RadRichTextBox's TextRenderingMode = TextBlockWithPropertyCaching. This mode also has problems, but it works in some cases.

Performance of scrolling and editing is diminished when Track changes are enabled.  Issue seems to be related to RevisionsToolTipLayer and occurs when more than a couple of paragraphs are inserted in the same revision.

Workaround: remove the UI layer responsible for tooltips of revisions.

    [CustomUILayersBuilder]
    public class CustomLayersBuilder : UILayersBuilder
    {
        protected override void BuildUILayersOverride(IUILayerContainer uiLayerContainer)
        {
            uiLayerContainer.UILayers.Remove(DefaultUILayers.ToolTipLayer);
        }
    }

In Word, slashes, dots, etc. are treated as separate words when moving the caret with Ctrl + Key.Right and Ctrl + Key.Left.

The fix is available in our LIB release (v. 2014.3.1208)

Add a way to convert between RadRichTextBox's RadDocument and RadWordsProcessing's RadFlowDocument. 

This will enable integration scenarios between the two products, including using RadWordsProcessing's format providers for import and export.

The fix will be available in our official release Q1 2015.

The fix will be available in our official release Q1 2015.

Add support for the following RTF tags (crop from top, bottom, left, right):

\picropt, \piccropb, \piccropl, \piccropr 

Consider raising an event when the images are finished loading, or an option for loading the images synchronously. 

Exporting document containing Hebrew text to PDF results in correct text (letter-by-letter), but with wrong text flow: letters in the words are inverted and flow left-to-right instead of right-to-left.

Implement Mirror margins similar to the option in MS Word.

In MS Word, this is controlled using Page Setup dialog -> Margins -> Pages -> Multiple pages: -> Mirror margins. Another possible options are 2 pages per sheet and Book fold.

Tab leader (dots) are calculated based on the available space between the end of the text in the entry and the page number. 

Workaround: to change rendering mode to TextBlockWithPropertyCaching:

this.radRichTextBox.TextRenderingMode = TextBlockRenderingMode.TextBlockWithPropertyCaching;

The issue is sporadic. Updating the UI resolves it.

Workaround: manually call
this.radRichTextBox.ActiveEditorPresenter.RecreateUI();
just after the acception.

The following parts are with hard coded strings and cannot be localized:

 - Insert Caption (InsertCaptionDialog): Combo boxes for label and separator
 - Paragraph Properties (ParagraphPropertiesDialog): Units of spacing and indentation values (pt)
 - Tab Stops Properties (TabStopsPropertiesDialog): The text of the tabStopsToBeClearedTextBloc
 - Cross references: reference types Figure and Table
 - TOC  and TOF: Heading and Figure, Caption labels
 - Document Ruler: Tooltips
 - FormattingColorPicker: The "No Color" string

Available in R1 2018 SP2 Release Version.