Testing with the Overview demo of the RadAjaxPanel
, the issue is not reproducible.
It would be helpful if you could provide some more details about the configuration that leads to the issue. Or event better, a simple, locally runnable solution with which to locally reproduce the encountered issue and investigate it.
Also, could you verify if you are using a recent version of the Telerik UI for ASP.NET AJAX, if it is older than the IE11 browser's release date it would be expected some incompatibility issues to be introduced. IF the last is the case, I recommend considering to upgrade with the latest available version.
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