PlayerList sometime empty with ZombieList incomplete

[Sevenn83]

I've notice sometime the playerlist got empty (after putting some logs), and the zombielist incomplete (no boss find for exemple), it's really random, it can happen time to time, or almost every game. It seems that playing with someone can make this happen more often.

When this bug happen sometime during the game, the playerlist got something but it's completly unrelevant, like player 450m never moving. The memory act really strangely about players.