No, sorry, i meant there were two of the same heros being used by different players. I thought that might have something to do with it. I haven't had trouble when there was only one of those heros on the map.
I think unit control was shared though, however, I don't think that is related, but i could be wrong. None of the players could control the hero when i tried that. I've only seen it happen once with this hero. I could probably do some more trials where i play with like 4 of that hero at once and see what happens. The only triggers really are ones that spawn units to attack. Pretty straight forward.
On a different map i've had the same thing happen with different heros. One is a werewolf. A trigger removes his transformation ability during the day time and adds it back during the night. He also only has the devour skill when he transforms. He can keep consuming though if he transforms back to normal if he has already ate something. Sometimes i've had this guy stop responding in the same way as the other hero.
I've also had a "demon" hero who's transformation is basically metamorphosis. He has randomly decided he won't use the skill any more. I don't think I have any triggers involving him.