Hi Hee,
I am aware of such a problem and it appears when the editor is
initially hidden and displayed. The issue is discussed in the following forum sticky note:
Incorrect rendering of RadEditor when shown with AJAX in initially hidden parent.
If your scenario is other and you are able to reproduce it even when your custom site stylesheet is disabled, please open a support ticket and send a sample working project that demonstrates it.
Best regards,
Rumen
the Telerik team
If you want to get updates on new releases, tips and tricks and sneak peeks at our product labs directly from the developers working on the RadControls for ASP.NET AJAX, subscribe to their
blog feed now