To reproduce: use the following rtf document content to import in the RadRichTextBox. Resolution: This issue is addressed in the new version of the control - RadRichTextEditor. Please use the new control instead the RadRichTextBox.
For the time being we do not have a time frame when this is going to be resolved. Currently, we are working hard on improving the whole RichTextBox experience. I hope we will get to this item soon as well.
The workaround for users of an application that saves text content in richtext format using the Telerik rtf provider is to change all left aligned text to Left-Right Aligned format that follows centered or right aligned text. In other words once you create centered or right aligned formats in your document any subsequent text entered that is left aligned must be changed to left-right aligned (sometimes called left-right justification). This compromise will work but users need to know this unless you program for this event and force left-right alignment whenever left alignment is selected.
Is there any update on when this will be fixed?