Tried playing last night with 3 players across two computers. PC A hosted the game, while PC B joined over Steam invite. Player 1 used mouse+keyboard on PC A, player 2 used xbox controller on PC A (joined via splitscreen), and player 3 used mouse+keyboard on PC B.
Bug 1: Zombies killed by players 1 & 2 dissapear after death, with no chance to loot the corpse. It looks like what happens is the 3D zombie model goes through the death animation and falls down, but the 2d "dead zombie" container never spawns in underneath. Zombies killed by being ran over with a vehicle seem to be unaffected by the bug. Player 3 doesn't have this bug--both zombies they run over and zombies they kill by hand are lootable.lootable
Bug 2: Player 1 is unable to drive any car. They can get in, start the car, change seats, loot, etc., but not actually move the car. Players 2 and 3 uunaffected
Bug 3: This one is probablly more of a fringe case. Player 2 was driving a vehicle, with player 1 in the passenger seat. Player 2 bled out and died while driving. After the car rolled to a stop, player 1 was unable to get out of the car, with the error text "Can't exit moving vehicle". Player 1 could still switch seats, roll down windows, etc. It also looked like there was a zombie underneath the car, so that may have had something to do with iit
Bug 4: Player 2 is unable to transfer items to their backpack or any other equipped container. The gamepad context menu (move to > backpack) is highlighted in red. They could still loot items from world containers. Players 1 and 3 are unaffected.
I haven't seen anyone else report bugs like this, so I think it may be an issue with the splitscreen mode since it's not super common. I'll need to do more testing though. I plan to check if playing an offline (singleplayer) mode with players 1 and 2 on PC A has any effect. I also need to see if playing without splitscreen (i.e. just player 1 on PC A, player 3 on PC B) eliminates the issue.