The Drowned City - Checkpoint not working

When clicking on this checkpoint in The Drowned City during act 3 cruel, it does nothing, likely bugged or some interaction makes it bugged, only entered the door, then out of it and clicked it, it didnt open the teleportation map. This happened after the usual complete-computer-freeze and crash which resulted in a complete reset of the instance, maps are big and thats a problem. It is actuallyt he third time I had to go through the entire map, because there was also a fight in the molten lava area map and by the time it finished the previous area reset itself which is another issue with big maps.