Beyond the base game I have WA, Ambitions, and LN. I don't have Fast Lane or High End. The only custom content I have is bought from the official store with the $10 credit from LN, and the only [edited for mention of mods- gerrr00].
HOWEVER, I did some puttering around and found out that only my apartment ghosts can't walk through walls/objects -- this is true for both a saved game and a new game. In both cases the ghosts could only move through walls on residential lots. Can anybody confirm that this is the case for them?