I am running i3wm on Ubuntu 20.04. When playing games on Steam, I'm trying to utilize both of my monitors. I use Proton which, in turn, uses WINE to run Windows games. Some games scale appropriately when entering
fullscreen global mode in i3 but confine my mouse to the monitor in which the app originally launched.
I have tried using
wine-cfg to disable capturing the mouse in fullscreen mode or emulate a virtual desktop of the appropriate size, but have had no success.
I'm beginning to think this is an i3wm issue rather than a WINE issue. Any help is appreciated.