The issue reported is a known one. It has already been logged for fixing. I have increased its priority and I have created a public Ideas & Feedback Portal item
, where you can track its status, vote for it and comment it.
In addition, there is another related RadTreeView issue in mobile browsers. You may review it in our Ideas & Feedback portal
as well. There is a workaround provided for it in the Portal item's description.
Currently, setting EnableDragAndDrop="false" to the RadTreeView prevents both issues.
I have replied to your support ticket as well. In order to avoid threads duplication I would suggest that we continue this conversation in the support ticket thread, if necessary.
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