The observed issue has already been fixed. You can try using the latest RadControls internal build
or wait for the RadControls Q2 2010 beta, which will be available next week.
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.