Please note that Sitecore CMS 6.3 is using RadEditor for ASP.NET (RadEditor Classic), which development is discontinued for more than two years in favor for the RadEditor for ASP.NET AJAX. In the release notes of of Sitecore CSM i noticed that in version 6.4 they have replaced RadEditor Classic with RadEditor for ASP.NET AJAX.
Do you experience the same problem with RadEditor for ASP.NET AJAX? Are you able to reproduce it on the live demos?
the Telerik team
Register for the Q2 2011 What's New Webinar Week. Mark your calendar for the week starting July 18th and book your seat for a walk through of all the exciting stuff we will ship with the new release!