Household members turning into neighbors/ Can't use doors (1.112.519/2.06)

My engaged couple had a baby but after she gave birth now its only recognizing her as a neighbor. I can still select her and play her as if she was a part of the household but when I try to have her partner engage with her - i only get the Invite In option. She's your partner, not a vampire bro. It happened after aging up the newborn to an infant, but that isn't tied to her. I only have EA purchased DLC, no Mods, no cheats active.