Hello Alex,
I have already replayed to your support ticket, so I am pasting my answer below for the community:
Note that we support browsers listed in
Browser Support help article only in their standards mode, which means the Compatibility View mode is not supported. That is why some issue like the mentioned one may arise in this mode.
What I can suggest you is to use the following meta tag, that disable the compatibility view:
More information on the matter is available in
this forum thread and
this blog post.
Regards,
Danail Vasilev
Telerik
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 the
blog feed now.