After you have inserted a new row from the context menu of the RadRichTextBox, it becomes selected and then if you want to add a new row from the context menu again, the option is disabled. 

You should be able to add a new row, so the insert command must be enabled.

A NullReference exception is thrown when the content of a MS Outlook mail is copy/pasted into RadRichTextBox. 

This is reproducible in Paged LayoutMode.

Styles from RTF are incorectly copied to RRTB.

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.

When HTML document which contains brackets and is set to RTL is imported, the closing brackets are converted to opening.

Workaround: Set RadRichTextBox's TextRenderingMode="TextBlockWithPropertyCaching"

When you click for second time the caret locates in the correct position. I.e. there are needed 2 clicks before first line of paragraph which starts with bookmark to set the correct caret position. It also cause the problem of incorrect selection which will select the previous paragraph.

This is because bookmarks essentially don't have position before them.

RadRichTextBox: Add import/export in the following formats: .mht .odt .epub .doc

Localization strings for thumbs and tab stop tooltips are missing. 

Note: This item is merged with the one at http://feedback.telerik.com/Project/143/Feedback/Details/141977 . To track the status of the issue, please subscribe to the other feedback item.

The caret of RadRichTextBox appears only when the text is selected. Once you try to reorder the letters within its content, it appears.

The issue is caused when ScrollViewer control has different than the default style for the corresponding theme and there are set Padding and/or Margin properties. 
Workaround: the template of the Caret should be edited and Style="{x:Null}" should be set on the ScrollViewer which is defined inside the Caret control template.

This item is duplicated. Please follow the other item at http://feedback.telerik.com/Project/143/Feedback/Details/159291.

The label for Decimal alignment is truncated.

I have tried to use the RichTextBox, but found that it does not work very well when it comes to measure the text. This results in clipped text and that the caret can be displayed in a different place then expected.
This can easily be seen with a font like Gabriola, which uses complex kerning metrics. Type a text with a lot of "ff" and "fi" and you will soon see that your caret gets out of sync and that text is sometimes clipped.
When I look at the code of RichTextBox it seems to me that it uses its own calculation of text widths and that the this is based on a very simple method using just the kerning information. There is also a hard coded list containing information which fonts that has kerning info and which fonts that are mono spaced. It seems strange to me to have this in a config file since there is a large number of fonts used by the users.
It also seem to look at the Unicode character family in order to determine if ligatures are used or not, which is also quite strange since ligatures can be used for western characters too. The font Gabriola is an example of this. Look at "fi" in a word like "fine".
It can potentially consume a lot of memory since I think that it builds a dictionary of the kerning of all pairs of characters for all fonts that it encounters.
I guess this way of doing things were made for performance, but unfortunately, good performance doesn't help much if it doesn't work.
I am not sure if I should report this as a bug, since it is more of a fatal design issue of the whole control.

please add shapes support for radrichtextbox. else support another textbox

Please look for the same topic in the forum for context. 
@Todor:
Am attaching the wmf file and png file that don't get rendered.

For now, We can drag or paste Images into RadRichTextBox. But still can't drag or paste files like RichTextBox in Winform. It's very inconvenient！

We need to support uneditable areas in the document flow. The closes analog in HTML is <div editableContent=false>...</div>.

MS-Word allows a user to toggle the markup and edit the document as final when track changes are enabled. This feature request is allowing something similar in RadRichTextBox.  

In RadRichTextBox, when i export pdf in memorystream Footers are spread.

The issue is reproduced with Marathi IME. Type some letters, press and release shift, then press space. The result is that the current IME text is duplicated.