http://bugs.winehq.org/show_bug.cgi?id=56447
--- Comment #2 from Chiitoo chiitoo@gentoo.org --- I don't remember if I ever saw the proper screen on Openbox before, but id does appear there now.
Additionally, it shows up on Wayland (LXQt/Wayfire), though another window which is black may cover it.
With KWin-X11, two windows appear as well, but they both remain black/empty.
Last tested at wine-10.19.