"Maze" map effect in overgrown ruin endgame doesn't work?

Thanks for the report!

Indeed, the Overgrown Ruin doesn't actually become that much more labyrinthine when said mod is used, though it should be a little bit larger.

I've changed the layout of the level to make it much more noticeable. Since the level is split into four separate segments, it's still not as pronounced as some other levels, but it should definitely be a lot better once this fix goes live.