I had the gorgon maze checkpoint from a previous raid where I had to back out. I came back to finish the raid and for some reason the exit of the maze that leads to the jumping puzzle is blocked off by a wall. To add to it, I was not in the darkness zone during the maze, meaning I was able to die by a gorgon, then respawn without wiping. I also had the checkpoint for two other characters, and when I went back to complete it, it took me to the beginning with the sync plates outside the vault.