[Bug] Maze (Thieves Warrens) party members glitch

I've had this happen 2 times, didn't bother to try more:
Current Behaviour: When going through the maze, somehow one of my party members would inexplicably show up behind a wall of the maze that was not previously explored yet.
Expected Behaviour: The party members should stick in the same lane as the one I am currently exploring.
Current Behaviour: When going through the maze, somehow one of my party members would inexplicably show up behind a wall of the maze that was not previously explored yet.
Expected Behaviour: The party members should stick in the same lane as the one I am currently exploring.
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