https://bugs.winehq.org/show_bug.cgi?id=53891
--- Comment #6 from Jinoh Kang jinoh.kang.kr@gmail.com --- I think this is fixed in 1d401e1a395e26d0f5a297ddc42321863d27bfc9.
Hypothesis 2 "window is invisible" confirmed after repeated testing, with 99% reproduction rate in ~1,000 iterations.
Triagers/admins: let's mark this fixed, whilist keeping the pattern in testbot to reopen on next failure.