I've disabled all of my add-ons except for the default ones, when I wand another player (or bot) a message in center print comes up "Player is in a different minigame". The players also don't receive any chat or center/bottom print messages via minigame. Despite all of this, players still spawn at specified spawn points, and any weapons or player-type changed in the minigame menu is changed for all players in the minigame.
I've tried this with a default minigame also.