Looks like the tower home room replaces the default one even when it shouldn't (i.e., earlier in the story when she hasn't moved into the tower yet).0
Viewing post in Rise of the White Flower comments
Upon playtesting some more, it seems to be a caching issue. If I load from the beginning or a save prior to the transition, everything works normally. But if at any point during a session I load a save or enter a segment using the new room, if I load a previous save, it retains the new room look.
*It seems like loading a save from before chapter 4 doesn't affect it, but chapter 4 and on is affected, as are new games.