Unable to leave arena

Good afternoon team,
I have found a bug that is preventing players from leaving arena's in waystone locations containing bosses.
Currently if a player teleports to their hideout after defeating the boss of a map, returning to the area to complete the map will not let the player leave the arena area. The game does not detect that the boss has been defeated and will not let the the player out of the arena, leaving the map unable to be completed. Any update on this would be greatly appreciated.