Here's a comparison of the shot in question:
In the bottom "Revisited" half, notice how much light there still is along the walls. It has always been this way originally but, as evidenced by the previous shot, there should hardly be any light down here (only the minimal light the MF emits).
The top half of this split-screen was gradually shadowed darker so its interior matches the previous shot of the interior better. As it's traveling downward, wherever the MF is, that's where the light should be more prominent.
I'm hopeful Ady will take this into consideration, if he hasn't already.