I just played a character's life where I was around Balota and took refuge in a house after being chased by a zombie. I noticed a layer of fog was coming in which seemed cool, but once I opened the door to let the zombie in to attack it, I had a sudden frame glitch and the screen filled up with just white-ish fog and I couldn't see anything else including my character. I was immediately killed by the zombies that I couldn't see. I couldn't find the walls of the house or the door to find my way outside and was just stuck. I have never had this happen before, though I haven't seen the fog roll in like this before. I understand the idea of being trapped in fog on the outside of the house, but being inside I would've figured there would be a level of visibility. I have a sense this could be an error, but if this is an intentional feature of the game then I suppose this message can be disregarded.