Hello guys,

Indeed, this issue could be bothering. However, the error doesn't prevent the treeview from working properly and application from running so the priority of the error is not that high compared to other issues. I will update its priority according to the latest demand and I could suggest you follow the items so you will be notified when its status changes.

I also spent some time to investigate the issue a bit further and it turns out that this is troublesome to reproduce. It seems that it can be reproduced only on some machines, but we are not sure what are the requirements needed for this. This is why, if you still have access to the project where this was found, I would ask you to share some runnable  code here or via the ticket system, and also tell me what is the version of the .NET of the project, the version of the referenced Telerik dlls the steps to reproduce this,, and whatever other information you find useful.

Regards,
Martin Ivanov
Technical Support Engineer