First bug is it seems when there is potentially a lot of players/items in the vicinity, when you aim over the shoulder or down sights, your gun points up in he air due to your character making a blocking animation. It doesn't always happen but last night I had to log at least 3 times in the space of about 2 hours due to it happening. I'm not 100% sure if it's related to lots of players/items being in the vicinity, but that what the common denominator for me. If I aimed in, about 6 out of the 10 times I would make a blocking animation. Re logging would fix it for a bit.

Other issues I have came across is when using a pistol suppressor on any pistol, zombies can hear it from really far distances away. It doesn't make any sense. It sort of makes the whole point in using a suppressor completely pointless. I think that this needs to be looked at and maybe make the zombie hearing radius for supressed shots a considerable amount lower than it currently is. This also applies to when crouch walking and crouch running, the zombies can hear you from crazy distances. My personal opinion is with the suppressors on pistols, the zombies shouldn't be able to hear them anything further than a 5-10 metre radius.