We have discovered an odd issue with the editor which can be seen here http://dojo.telerik.com/ijiRu.

Create a hyperlink in the editor then move the cursor to the start of the text and hit enter. A new line is created. Now when you view source you end up with 2 links instead of an empty paragraph.

<p><a href="http://google.com">&nbsp;</a></p><p><a href="http://google.com">google</a></p>

This can then lead to problems where multiple links are showing up where only 1 was created.