Map terrain occasionally blocking progress - occurred in Apex of Filth

I had an instance today running the Apex of Filth on normal difficulty where the map terrain was generated in a way where the corners of two impassable areas met along the final path to the boss. I was unable to move or dodge roll through the area and had to exit and allow the area to reset and try again.

I have screenshots of the terrain as well as the full map to show there was no alternative path possible that I can provide on request.

This happened to me this day aswell.
No way to advance through a corner thats blocked off, with mobs on the other side.

Annoying, i know, but i had to open a new instance and try again.
Also have picture of the map if needed.