I don't see this reported here, so I wanted to note -- in Caleb's route, chapter 14 at the very beginning, the background has the wrong version of MC's room at Endgame. I have a screenshot, but I'm not sure I should post it because of spoilers? It's the very start of the chapter, and has the Magnus route version of her living room, instead of the one for Caleb's route.
Nevermind, they make a reference a few pages later to "decorating the new flat" -- this clearly isn't a bug!