MAP boss cant leave arena

Hello GGG,

I ran a T12 steaming springs map with a map boss. The area for the boss did not have an arena instance when I ran in and killed the boss. After collecting the loot bags were full and went to town. When I came back it is now showing an area boss portal to go back to the rest of the map. I am unable to click the arena portal. I have tried to open a new portal go back to town then come back to map but still unable to enter the map. Tried to completely exit the game and come back but having the same issue. had to just lose the map.