Hi Tom,
Thank you for reporting this issue. I was able to resolve the issue and the fix is already scheduled for inclusion in the Telerik UI for ASP.NET AJAX 2026 Q1 SP2 release. The exact release date is still being finalized, but it is expected most likely in March, and no later than April.
As a token of gratitude, I have updated your Telerik Points.
Regards,
Vasko
Progress Telerik