https://bugs.winehq.org/show_bug.cgi?id=57547
--- Comment #20 from T E Dixon dixonte+winehq@stc-networks.com --- (In reply to Bernhard Übelacker from comment #15)
You seem to have a few input devices connected - maybe you could disconnect some, so there is less output, and if just the mouse (and keyboard) is involved chances get better someone can replicate the crash.
Tonight I tried disconnecting all input devices other than mouse and keyboard, and the same issue happens. I've tried this with the hand-compiled wine and the git build from portage.
Also, more oddness; for some reason now with my hand-compiled wine, the error dialogue box does not appear even though I've manually edited crashdlg.c and completely deleted the prefix directory before trying the newly compiled wine64. I suspect maybe this is somehow because I'm not taking the extra steps to build wow64? But then neither is portage, according to the use flags.
Using wine-staging as built by portage from git with the patch applied, I get the dialogue. I might stick to letting portage handle the build from now on, but will test if a git build of wine-vanilla has the issue next.