If a match is finished and you re - play against the same player and keep pressing the button a lot of times really fast you'll get a ding sound and that means the bug works and no matter what, you can't die, when you "die" only you can move and the other player is stuck in its place, you can still bend and do everything but you can't die and after a few seconds the match will end.

I think it happens because you are both the host and the client and the game can't decide so you just can't die and then it crushes