The observed is a bug in the TreeView functionality in AngularJS scenario. Therefore, we have included that in our backlog. Also, I have created an item in public GitHub repo
, where you could track the bug status.
As a small token of gratitude for reporting to us this bug I have updated you Telerik points.
Unfortunately, at this stage, I won't be able to offer you a viable workaround for the discussed.
Telerik by Progress