In response to radium, thats why many levels using trigger systems force you to go through a tube in the beginning of the level to reset the server triggers (Levels like Jailbreak and Assault require this - you don't want the players to receive the hosts (who is on blue) triggers when they are red)

There are also delays in the sucker tubes in those cases, because you can't hit trigger zones right after you join - you need a bit of a delay ( 5 seconds, maybe more) to stop flashing, and then you would be able to hit them. This isnt required in cases when for instance you die in the level, since the only time you cant hit trigger zones when youre flashing is right after you join.