RadRichTextBox always shows more than one page when there is enough space on the screen to render them next to each other. Expose an option to show one page view.

I want to insert a bulleted list into a richtextbox at design time.  I use the MarkupEditor to get the list in and it displays the text with the proper formatting in the Text property but nothing shows up in the richtextbox itself.

Resolution: 
The feature was introduced in the new version(Q1 2015 SP1) of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox.  

ADD. RadRichTextBox - add support for headers and footers

Resolution: 
The Headers and Footers feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 
Please refer to our documentation for more information on the following link: http://www.telerik.com/help/winforms/richtexteditor-features-headers-and-footers.html

ADD. RichTextBox - add RightToLeft support

Resolution: 
The RightToLeft  support is added in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox. 

Allow the html formatting provider to allow exporting the italic/bold/underlined text by using the corresponding html tags instead of text-decoration css styles.

Resolution: 
This issue is addressed in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox. 

You can use the following code snippet:

HtmlFormatProvider provider = new HtmlFormatProvider();
provider.ExportSettings.ExportFontStylesAsTags = true;

Implement ExportFontStylesAsText property to HtmlExportSettings that allows exporting font styles as html tags.

Resolution: 

This issue is addressed in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox.  

You can use the following code snippet: 
HtmlFormatProvider provider = new HtmlFormatProvider();
provider.ExportSettings.ExportFontStylesAsTags = true;

To reproduce: 
Richribbonbar have "table" in insert in demo , but in richribbonbar there is not any 
in picture 2 I am showing telerik demo, and in the first one is that I used in my program, does telerik lies in demo?

Resolution: 
This issue is addressed in the new version of the controls - RadRichTextEditor and RichTextEditorRibbonBar. Please use the new controls instead the RadRichTextBox. 

IMPROVE. RadRichTextBox - improve image quality when inserting images

Resolution: 
This issue is addressed in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox. 

ADD. RichTextBox - add printing support.

Resolution: 
The Printing feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 

Make possible accessing the caret position inside a SpanLayoutBox.

Resolution: 
This issue is addressed in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox. 

You can use the following code snippet: 
DocumentPosition caretPosition = this.radRichTextEditor1.Document.CaretPosition;
SpanLayoutBox spanLayoutBox = caretPosition.GetCurrentSpanBox();
int pos = caretPosition.GetCurrentPositionInSpan();

Currently there are no means for resizing images inserted into RadRichTextBox.

Resolution: 
You can resize the images in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox. 

All dialogs - hyperlink, bookmark and every other string in the control should be localizable

Resolution: 
The Localization feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. Please refer to our documentation for more information on the following link: http://www.telerik.com/help/winforms/richtexteditor-localization.html

Add ability to change the color of the bullets and numbers when changing the text's forecolor.

Resolution: 
This issue is addressed in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox.  
You need to select the whole line by triple clicking on it, then change the color. 

Allow users to insert read only document elements.

Resolution: 
The Read Only Ranges and Document Protection feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 
Please refer to our documentation for more information on the following link: http://www.telerik.com/help/winforms/richtexteditor-features-read-only-ranges.html and http://www.telerik.com/help/winforms/richtexteditor-features-document-protection.html

Add image resize functionality.

Resolution:
You can resize the images using their adorners which appear after you click on them. This feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 
 

ADD. RadRichTextBox - add watermark support

Resolution: 
The Watermark feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 
Please refer to our documentation for more information on the following link: http://www.telerik.com/help/winforms/richtexteditor-features-watermark.html

RadRichTextbox - add support for ruler.

Resolution: 
The RadRichTextEditorRuler is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 

Example: http://www.telerik.com/help/wpf/radrichtextbox-features-selection-mini-toolbar.html

Resolution: 
The Selection Mini Toolbar feature is added in the new version of the control. Please use the RadRichTextEditor instead the RadRichTextBox. 
Please refer to our documentation for more information on the following link: http://www.telerik.com/help/winforms/richtexteditor-ui-for-applying-rich-text-formatting-ribbon-ui-selection-mini-toolbar.html