https://bugs.winehq.org/show_bug.cgi?id=45148
--- Comment #32 from Storm Engineer hewanci@gmail.com --- Meanwhile:
For those using just regular wine, the simplest workaround I found to automatically remap the Ctrl keys (as suggested above with Lutris) is the most basic approach - to run the Blizzard app with a shortcut/script like this:
xmodmap -e "keycode 37 = Control_R"; wine /your/prefix/drive_c/Program\ Files\ (x86)/Battle.net/Battle.net.exe; xmodmap -e "keycode 37 = Control_L";
This is tied to the Blizz app though, so launching and closing the app will remap/revert, regardless of the game running. If you close the Blizz app with Overwatch still running, the key will stop working in the game.