I think they auto-CC when their program detects another player in the map, but recently, I've been finding this a lot when I enter the Homunculus map: all the monsters in the map vacced to a platform that normally doesn't spawn. Sigh.
I was running out of Use space, so I applied some untradeable event scrolls to my (equally untradeable) glasses. +14 ATK... but I'm a [i]mage[/i]. ENDLESS FACEPALMS