I am sorry for the late reply.
I reproduced the issue in our test environment. I have logged a bug in our Public Issue Tracker - http://www.telerik.com/support/pits.aspx#/public/aspnet-ajax/12854
. You and all other clients can check its state. We will try to have it fixed and released as soon as possible.
Should you have any future inquires don't hesitate to contact us again.
the Telerik team
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 their blog feed