Hey,
As far as I know, ETQW doesn’t support direct Alt+Tab by default. It is possible to enable quick switch to windowed mode, then activate console and lastly Alt+Tab;
https://pcgamingwiki.com/wiki/Enemy_Territory:Quake_Wars#Cannot_use_Alt.2BTab.E2.86.B9_while_in-game
I am pretty sure there are third party tools to for proper Alt+Tab but I rather prefer my game to remain as it is. As I tried on macOS port, it is possible to bind a key for related commands such as r_fullscreen and vid_restart. How about binding a key for switching to fullscreen and opening the console at the same time; so instead applying three steps {Tilde (console) + [Alt+Enter] (windowed) + [Alt+Tab]}, I can directly switch to windowed mode while console is opened, then apply [Alt+Tab]? I know, it seems a bit complicated but windowed mode binding in bindings.cfg on Mac is like that;
bind "F9" "toggle r_fullscreen; vid_restart" "" "default"
Is it possible to include open console command to that line?
Thanks.