Does tristam go away after you leave room?
I exited to get body back and came back and portal was gone.

Obviously yes if single player. If bnet, then portal should stay open until game expires.

very weird i was in multiplayer and it definitley went away

Game isn’t coded that way so it’s literally impossible. You must’ve joined a different game or something.

yeah i joined another game with my treachery in front of chest

Kinda amusing I must say.

Was ur treachery on the floor before u created the portal?

When i played online, I've had the game "roll back" a couple times before and losing the items I had used and the new item not be there.

yes it was on the ground before opening. All the other portals were there just not tristam. Wasnt a big deal but was odd.