Cant leave lich fight side area in abyssal depths

Encountered a lich in Abyssal depths, couldn't leave any of the side areas because the door didnt appear after killing the Stygian Spire and all the monsters.

Due to having to log out and come back in the continue the fight, and to game freezing I lost all of my map portals, and didnt have any portals left when I got stuck at the last side area, so I cant come back to finish the fight.

Pretty sad that I lost my lich loot because of this bug.

Bug report reference number: 4 087 333 635

Screenshot where the entrance to leave the side area doesnt show up on map: