Stuck in Deathscreen (befor respawn, in revive mode and scoreboard)

The game gets stuck when I die quite often now. Most of the time it gets stuck in scoreboard, but not solely. I also got stuck while beeing down but not dead, i coulnd't give up to respawn. When i was revived everything worked fine. But the game also gut stuck two times, when I gave up. No respawn screen nothing. The game didn't freeze, I was still in dead body camara and saw players running around. But I couldn't do anything. Happend twice so far. But by far the most freaquent thing is getting stuck in scoreboard. But as I can recall sofar only when im dead. 

So far, the only solution is Alt F4 ...