http://bugs.winehq.org/show_bug.cgi?id=57635
--- Comment #8 from wine@xarov.net --- (In reply to Ken Sharp from comment #7)
Do you have to log in to test this?
Yes. Because the initial login window box is displaying correctly. The launcher is the issue. It's completely black. After logging in.
However, it is fixed by using the `--in-process-gpu` argument for the executable. It's an Electron flag and I'm guessing the launcher is Electron or Chromium based.