Mai Tran fractal bug
A friend of mine had a similar issue tonight during that fight. She kept getting teleported back to that location.
There’s also another bug that allows Mai to teleport outside the room past the force field. If that happens and a party member is out there, she’ll just keep attacking that person until they’re dead. Eventually she’ll teleport back inside, go invulnerable, and reset completely.
Just got Mai again, and tested it a bit more. Turns out the part of the wall this happens is actually the part that’s behind the plane of the force field blocking the entrance. Also, this teleporting thing only happens when the fight is going on. My guess is the barrier meant to keep players from staying out of the fight once it starts extends into the arena proper.