The described issue is rather strange and form the RadGrid declaration only it is rather difficult to determine what exactly is causing the problem. Could you please elaborate a bit on the exact ajax settings you are adding. Also does the RadGrid control also ajaxified? It will be best of you could open a regular support ticket and send us isolated runnable application which demonstrates the described issue. Thus we will be able to debug it locally and do our best to provide proper solution for your specific case.
the Telerik team
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