https://bugs.winehq.org/show_bug.cgi?id=55899
--- Comment #5 from Fabian Maurer dark.shadow4@web.de --- An thanks, it works now.
-mpreferred-stack-boundary=2
helps, more or less completely resolves the issue
-mincoming-stack-boundary=2 -mpreferred-stack-boundary=4
doesn't change anything
I have no idea what to make of that though.