I have implemented your scenario in a sample web site. However, the described unexpected behavior was not present. Could you please modify the attached project, so it reproduces the problem and then send it back to me? Note that you will have to add Telerik dll files in the Bin folder of the project in order to run the web site. Moreover, it will be very useful to know which version is the browser you are testing on.
I am looking forward to your replay.
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