Game "disappeared" but I could still hear it?

it didn’t freeze though, just disappeared O.o And unfortunately I don’t know if anyone could see me moving (if I had been able to choose). But I could not see the overwatch style cursor and the screen didn’t go black i just went to my desktop as if the game was minimized - without actually being minimized (at least not visibly). It just completely disappeared except the audio
edit: Typo

another edit: I hadn’t even picked my character yet :confused: I am an anamain though, so that’s something we have in common but I had played lucio the previous game. This happened on Hanamura attack, first round. The game had not yet started, I shut my pc off during the “5-4-3-2-1” countdown but the issue happened before I even got to pick a hero :confused: