https://bugs.winehq.org/show_bug.cgi?id=41567
--- Comment #2 from Alistair Leslie-Hughes leslie_alistair@hotmail.com --- (In reply to Nikolay Sivov from comment #1)
With native comctl32 I can indeed drop onto selected item which is a no-op action, understandable, because it's dropped onto self. For issue 2 you mean
Just select something else in the tree so your not dropping onto itself and the issue still occurs.
drop target item is supposed to be highlighted with slightly darker shade of gray comparing to selected item color?
Yes. If it help, Change the color scheme via "Visual Style" in the start Ribbon to something more useful. (Visuals studio 2013 - Blue)