https://bugs.winehq.org/show_bug.cgi?id=45627
--- Comment #1 from Austin English austinenglish@gmail.com --- Maybe not a staging bug. I manually applied staging patches to bisect (on a different machine), and the bug doesn't occur. Perhaps it's compiler related?
Good machine has gcc-7.3.0. I'll have to check the other machine tomorrow (and see if I can maybe bisect the patch as well).