The "maximum number of players" room setting breaks after the Lua event comes up. After the event, the 'current/maximum' indicator next to the room name in the list is replaced with a single number showing the current amount of players (while the special settings popup still claims that there is a maximum number), and more players than the originally set limit can join the room.

Is this perhaps because the event sets the maximum number of players to 50 and then doesn't properly change it back to what it was before?