So a group and I were trying to run vet Selene's Web since it's a pledge, but while in the middle of fighting the final boss, a loading screen randomly popped up on my screen briefly, which prompted me to fall THROUGH the map; then another brief loading screen appeared, and I was somehow ported back to the beginning of the dungeon. I couldn't go through the door, even if the group was dead, because the game thought we were still in combat.
Had to leave the group and then be reinvited. Then we restarted the final boss fight, but the same thing happened to the tank that time. Loading screen happened, which ported them back to the beginning of the map. They, too, couldn't go through the door because we were still in combat. We ultimately left the dungeon because it was virtually unplayable.
Warning to you all, STAY AWAY from that dungeon! It's super glitchy!