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Request a Feature Report a Bug
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Last Updated: 04 Jul 2025 12:39 by ADMIN
Release 2025 Q3 (Aug)
Sharvi
Created on: 04 Jul 2025 12:15
Category: Editor
Type: Bug Report
0
RadEditor Fails to Render in IE and IE Mode due to Embedded ECMAScript Syntax Errors
When loading RadEditor (Telerik UI for ASP.NET AJAX 2025 Q2) in Internet Explorer 10/11 or Edge in IE Compatibility Mode, the editor does not render and JavaScript errors occur immediately upon page load.

SCRIPT1002: Syntax error
SCRIPT5022: Sys.ArgumentUndefinedException: Value cannot be undefined. Parameter name: type
1 comment
ADMIN
Rumen
Posted on: 04 Jul 2025 12:39

Hi Sharvi,

Thank you for reporting this issue. I have good news that we fixed it internally and it will be addressed in the next 2025 Q3 release, scheduled for August.

While we no longer officially support legacy browsers, we understand that our AJAX suite is still used by many enterprises running older environments that rely on Internet Explorer or IE Mode (Edge). As a small note of appreciation for helping us improve the product even in these scenarios, I have added Telerik points to your account.

Thank you again for taking the time to share this feedback.

Regards,
Rumen
Progress Telerik

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