In several cases shots did not register on animals, infected and players. Tried hunting sheep, took three shot from a distance, did not kill any. Got closer and took a shot at closer range, didn't kill either. Got point blank, shot, no effect. The shots attracted infected, I shot at them several times, no effect. Had to run into a building to hide, shot from the window point blank with a pistol, no effect.

Had this happen on several different lives. On two lives got this happen with players: my shots didn't register on them, while his shots did. Both time I'm sure my shots were on target: I fought infected, when my pistol shots started "going through" them doing no damage. So I had to use melee to kill infected, but arriving players also didn't get damage from my shots.

Happens unpredictably... Didn't notice any pattern or anything. Restarting the game helps. When this bug is active the log out timer does not show up and you can't just log out normally, I had to shut down the game completely and them turn it back off.