Hi,
The RegisterWithScriptManager="false" is suitable for MVC scenarios and you should not set it if you use RadEditor in ASP.NET webform.
In addition, the onParentNodeChanged is useful especially for the non IE browsers when the editor is moved in the DOM. If the problem does not exist in IE, than just do not fire this method.
function
OnClientLoad(editor) {
if (!$telerik.isIE)
setTimeout(
function
() { editor.onParentNodeChanged(); }, 0);
}
If you unable to fix the issue, please, isolate it in a simple working project and send it for examination on our end via a support ticket.
Best regards,
Rumen
the Telerik team
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