https://bugs.winehq.org/show_bug.cgi?id=48462
--- Comment #20 from Dominique Martinet dvufhr.nznqarjf@noclue.notk.org --- Indeed, if the rawinput patchset has been disabled in staging then the issue would also have gone away; I didn't go as far as to check why the issue disappeared.
I can recompile with the patchs to check again, if that's any help, but unlike what I had said previously it would be hard to find proper time to debug so not sure how much helpful it is. I'll at least reopen here if the issue manifests itself again when patches get reapplied if I'm still using the game at that point :)