Do you have RadAjaxManager on the page, too? Please note that using RadAjaxPanel
simultaneously with RadAjaxManager
( or implementing multiple wrapped RadAjaxPanels
) is not a supported scenario and we highly recommend to avoid such implementation. Please either use just the manager to update your controls replacing the RadAjaxPanel with a regular asp:Panel, or use the RadAjaxPanel alone to wrap your page.
If this is not the case, please elaborate on your specific scenario and provide us the exact steps to reproduce the issue or open a support ticket to send us a sample runnable application demonstrating the erratic behavior. Thus, we will be able to further analyze the problem and provide a proper solution.
All the best,
the Telerik team
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