I noticed that you are using quite old version of our control - could you please verify the exact version you have installed. I have tested the behaviour you are describing with the latest assemblies and I could not reproduce the issue. Could you please download the Q2 2012 version, which is available since yesterday and give it a try.
If you still experience the problem, could you please open a support ticket and send us a sample project in which this issue can be observed. In that way we will be able to track down the source of the problem and provide you with solution.
the Telerik team
Explore the entire Telerik portfolio by downloading the Ultimate Collection trial package. Get it now >>