Another thing that needs to get fixed is what happens to a player who took over a bot during the run when another players joins.
I was playing a game where we fought the ogre in 1.2 from the saferoom, with 1 player down to spawn it.
I got downed and took over a bot and as soon as I wanted to drop some items down for the other player I got kicked to spectator mode, because another player joined and apparently I had to make the bot usable for the new player.
The new player did not take control, so the bot was in control and messed up the whole run just by jumping down to the last surviving player.

Also sometimes I have the knife card active in the next stage (after switching from bot to my own character), despite the card not being shown in my list at all. Can also mess up quite a bit if you cant keep the crowd away from you.