Thank you both for sharing your feedback. I am sorry to hear this important to you issue is indeed still not resolved. After a discussion with the development team, the priority of the bug report was raised and hopefully we will manage to resolve it soon. We apologize for this inconvenience.
On our side, we have simply removed the virtualization from our panels. However, we have suffered a performance hit doing so. We are also looking forward to the resolution of this issue.
Is anyone going to look into this? Not getting a lot of faith here in Telerik products when such major bugs exist, are reported, and aren't fixed for months.
Confirmed. Happens for me when a sort property changes and the panel needs to re-arrange.