I picked Konstantin, the match loaded, but I noticed there was no overheat UI so I couldn't tell when my weapon was overheating. I think it randomly gave me the crosshair of another character, because I did have a crosshair, just not Konstatin's usual one. I probably wouldn't have noticed otherwise lol.
A quick restart of the game and then reload into the match fixed it.
I can upload a video if it's helpful to the devs but I don't think there was anything in there that was obviously the cause.