This is already Game breaking BUG!
You finished the exp-mode Dungeon, watch the last Dialog and in the middle of it you get teleported out of the instance, CANT WATCH EVEN THE FILM SEQUENCE TILL THE WHOLE END AND CANT LOOT THE LAST CHEST,
couse one sneaky party leader descides to leave the party before everyone is ready to leave, so he grabs the last chest and hurry to leave the party -> all others are screwed couse you get teleported out.
Whats so hard about to fix this?