EXWM is great but one place it is in dire need of help is managing fullscreen applications such as videogames. Right now, those windows are unmanaged, meaning they don’t show up in your buffers. If you manage to leave the unmanaged window to check something else, it is impossible to return and you need to force kill the application in question.

It is a big big problem and one that has almost driven me to leave EXWM more than once. The developer has stated this is intended behavior which is insane to me.