As already stated, we were unable to reproduce the issue using the latest version of the control. I'd suggest you download and upgrade to the latest one.
In addition, please specify the exact OS, browser brand and version that you use.
On aside note, we checked your account and noticed that you have not downloaded RadControls 2008.1.515.20 from our site. Still, it seems that you have been using the control for some time now. Since it is our policy to support only registered users, could you please share how you obtained our products? Maybe you downloaded them under a different account. If so, please share it with us so we can update our records and provide you with adequate services.
All the best,
the Telerik team
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