MS Word shows additional tab stop for a text in a list when a document is exported to RTF format.
Steps to reproduce:
1. Open RadRichTextBox
2. Add 2 or 3 paragraphs with text.
3. Add a 5-inch tab stop for those paragraphs.
4. Apply a list over those paragraphs.
5. Export to RTF format and view in MS Word.
Note: The paragraphs should not contain any tab symbols.
Observed result: MS Word shows additional tab stop at the start of the text in the list.