https://bugs.winehq.org/show_bug.cgi?id=30944
--- Comment #11 from Frédéric Delanoy frederic.delanoy@gmail.com --- (In reply to Matteo Bruni from comment #10)
(In reply to Frédéric Delanoy from comment #9)
Closing
Looking at the linked bug report, this one might actually be fixed. Has anyone verified that's the case?
Apparently fixed according to https://github.com/fluxbox/fluxbox/pull/19