Nodes are not always dropped successfully on another treeview when the source nodes are selected.
Some nodes do not auto-expand when hovered while dragging nodes.
DragEnding event is not fired in some cases.
Sometimes, e.Node and e.TargetNode are null in the DragEnded event handler
In RadTreeView, if AllowPlusMinusAnimation property is true and LoadOnDemand is true as well, plus/minus symbols disappears.
RadTreeView should be able to bind to subproperties.