Hello Robert Verderber,
I tried to reproduce the described behavior, but to no avail. Please find the attached sample project, which works as expected. Test it on your side and let us know what the difference in your scenario is and which are the steps for reproducing the problem.
It would be very helpful if you could open a regular support ticket and send us a sample application, showing the problem. We will test it locally and research further.
the Telerik team