When you are registering an embedded font using the FontManager class, the font family is not rendered. The issue is observable only in WPF.

If an RTF file contains hyperlink with backslashes in the URI, it is imported broken. Usually, similar hyperlinks are pointing to a local file.
As a workaround, another syntax may be used. For example, "file:///".

The fix will is available in our LIB release (v. 2015.03.1109).

The thmx file extension is associated with Microsoft Office 2007/2010 themes.The themes are stored in *.thmx files, and the built-in Office themes are stored this way in C:\Program Files\Microsoft Office\Document Themes 12\.

The format of a thmx file itself is a ZIP-based format (just like the OpenXML file format).
With the use of the thmx templates, it is possible for users to create uniform looking documents in Word (also in Excel and PowerPoint).

Workaround: Currently, exporting of RadDocument style sheet is supported only to custom XAML format (http://docs.telerik.com/devtools/wpf/controls/radrichtextbox/features/styles/style-sheets ).

Paragraphs with applied Normal style are currently exported to RTF with \s0 tag. Instead, this tag could be omitted.

We've run into the following problem with the RadDocumentEditor:

1. Turn on bold
2. Type some characters.
3. Turn off bold.
4. Insert some text using the Insert method in Telerik.Windows.Documents.Model.RadDocumentEditor.

The inserted text is bold; it should ​have no formatting.

In paged layout mode, the caret becomes invisible when the document is scrolled to other page, so that the page with the caret goes out of the view port.

This behavior is also observed when editing, for example when inserting page break or section break.

Add support for importing/exporting macro-enabled document (*.dotm), while preserving the macro content.

When the document is in Web layout mode (with RadDocument.LayoutMode = "Flow"), and contains multiple sections with comments inside them, the comments are visualized on unexpected places outside of the comments pane, or one over another, hiding other comments.

When the user inserts a table in right-to-left mode, there is no ability to resize its rows/columns. The Table Properties dialog or the Document Ruler still can be used to resize the rows/columns of the Table.

FloatingUIContainers are not cleared from the UI when they are deleted.

Workaround: Recreate UI using the following code:
this.radRichTextBox.ActiveEditorPresenter.RecreateUI();

Inserting a single-cell table with top border is a common workaround for the missing 'horizontal line' functionality. 

Exporting such table to PDF causes wrong result if the intercepting vertical borders are of type None and have smaller thickness.

Attached image outlines the issue.

Workaround: Set the same thickness to the noBorder and to the visible border:
var t = new Telerik.Windows.Documents.Model.Table(1, 1);\
var noBorder = new Telerik.Windows.Documents.Model.Border(3, BorderStyle.None, Colors.Black);
t.Borders = new TableBorders(noBorder, new Telerik.Windows.Documents.Model.Border(3, BorderStyle.Single, Colors.Black), noBorder, noBorder);


Steps to reproduce:
1. Insert table with the following code:

            var t = new Telerik.Windows.Documents.Model.Table(1, 1);
            var noBorder = new Telerik.Windows.Documents.Model.Border(BorderStyle.None);
            t.Borders = new TableBorders(noBorder, new Telerik.Windows.Documents.Model.Border(3, BorderStyle.Single, Colors.Black), noBorder, noBorder);

            this.radRichTextBox.InsertTable(t);
2. Export to PDF

When Insert date command through "Date & Time" button is executed for the first time, the date is added to the document as expected. However, if the date is inserted once again, then the date is inserted twice. If date is inserted for the third time in the document, then it will be inserted three times and so on.

Pressing Enter in the first empty cell in the second table of two adjoined tables adds the paragraph between the tables. Instead, the paragraph should be added in the cell.

Steps to reproduce:
- Add two tables.
- Remove the paragraph between them (using the Delete key).
- Add paragraph in the first cell of the second table.
Expected: The paragraph is added in the cell.
Actual: The tables are separated by paragraph.

The flow direction of a paragraph is automatically changed to right-to-left if all spans in the paragraph are in the right-to-left mode when importing from DOCX format.

This feedback item is duplicated. Here is the link to the original bug report: https://feedback.telerik.com/Project/143/Feedback/Details/145511-richtextbox-incorrect-layout-and-export-of-bi-directional-mixed-text-containin