https://bugs.winehq.org/show_bug.cgi?id=54999
--- Comment #4 from Bernhard Übelacker bernhardu@mailbox.org --- An implementation of ShouldAppsUseDarkMode got committed in b5f4a6a4db. With wine-8.21 and this commit reverted the empty window is shown. With regular wine-8.21 Process Explorer shows the process tree (without icons).
Therefore this should be fixed by: https://gitlab.winehq.org/wine/wine/-/commit/b5f4a6a4dbb6f4d7b9f182d0d551393...