Yo, I don't know about windows, but on linux if I run full-screen I loose complete control of the function buttons to change brightness or sound volume on my laptop. I mean...it's definitely not a bug that's why I'm posting it here, but it would be nice to regain control. Also, I can't alt-tab out of the game..so yeah...this is kind of a problem.
The worst was when I wanted to connect to the server and got he ip wrong so the game just freezes while it's trying to connect...and I loose complete control of everything. I had to
ctrl+alt+f1
and
sudo service lightdm restart
my way out of it...which sucks.
Also, regarding screens and stuff..the game is made to initially start up in Windowed Seamless..which is fine by me, but my cursor appears higher than it actually is. So in order to press a button in-game in the menu I would have to move the cursor slightly above the button in order to click on it. This thing disappears in fullscreen which is odd...
Just saying, maybe you could improve these functionalities? :D