We have a RadTreeView. There is no horizontal scrollbar. We edit a node's header to a longer string and a horizontal scrollbar appears. If we edit again the node's header to a shorter string, the horizontal scrollbar remains even it isn't needed anymore. UPDATE: There is a similar problem with the height of a RadTreeViewItem. If we edit the RadTreeViewItem's content to become at least of two lines - the height of the item is increased, which is expected. But if we re-edit this item's content to be on one line only - the height of the item remains larger, which is incorrect. Please note, that this issue is observed ONLY on sub-items not on the parent nodes. This seems not reproducible with R3 2016 version of RadTreeView. Please open a new support ticket with details regarding this issue if you encounter it.