https://bugs.winehq.org/show_bug.cgi?id=48559
--- Comment #3 from Roman Pišl rpisl@seznam.cz --- Created attachment 66394 --> https://bugs.winehq.org/attachment.cgi?id=66394 Quick fix - patch
I tracked down the problem to winproc.c. The attached workaround/patch fixes the issue.
There are too many fixed buffers in the code. The file would probably need some attention..