https://bugs.winehq.org/show_bug.cgi?id=55231
--- Comment #13 from Mel pmargeti34@gmail.com --- (In reply to Gabriel Ivăncescu from comment #9)
Did you do anything specific when it didn't work last time? The patch should now be restricted to when the system captures the mouse pointer via either a Menu showing up (you know, those Win32 menus, at the top of most apps, not custom menus in games), or when you drag/resize the window by grabbing it (the default Windows operation I mean).
I alt-tabbed to firefox and back to the game at one point, so like others said, it's probably a Wine not using raw events.