The `fullscreen toggle` command should do what you want, but only if you use it after you go full-screen in the app. I believe it's bound to `$mod`+`f` in the default (QWERTY) configuration file that `i3-config-wizard` generates.
The `fullscreen toggle` command should do what you want, but only if you use it after you go full-screen in the app. I believe it's bound to `$mod`+`f` in the default (QWERTY) configuration file that `i3-config-wizard` generates.