Okay, I haven't tested whether or not the items actually work in game, but I have come across a different conundrum. None of the sprites for the new models appear in the game (except the baking tray), and instead they use the placeholder question mark sprite. I don't know if this is intentional but I wondered if you'd like to know. Otherwise the items appear in-game, but I haven't had the chance to see if any of their recipes function correctly yet.