[GAMEPLAY] Tabbing out during loading screen causes black screen

During loading screen if i try to tab out (Mac) the screen goes black and I'm unable to do anything. Can still hear sound of both music and game when it loads. Forces me to turn off computer and try to reconnect, sometimes when re-entering after reset the black screen occurs again, but I can still hear game sounds.

1. Start game (any gamemode)
2. CMD + Tab