Hello Alexey Oyun,
Thanks for your report. I tried to reproduce the problem under FF v3.6.3, but I could not. Could you please provide some more details and steps to reproduce the problem? Also, link to the exact online help would be greatly appreciated.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items.