Ideas
I was having the issue where the infant would get laid down in the crib, and then turn so they're laying sideways and ending up at the parent's feet. And the stretching limbs. I have so many cute cc cribs and toddler beds that I'd hate to lose, but it might be the only way if the modders don't update them. It's the first time I've had trouble with mods. My infants were turning sideways like babies do when they are in a cc crib. I never thought I'd see the new infant work, but it did when I took out all my mods. I tried taking out the cc baby cribs and the packages that enable it: Baby with Hidden Crib (default) by LiKo.package and Crib Good Night (basegame).package, but it was sideways infant again. So I also took out all the cc toddler beds and bedding, and IT WORKED! Yay! I guess infants are affecting and wrecking both.
I would blame CC if this had not happened when I played without CC or mods. The game is just glitchy after the update, even after I "fixed" it in the EA app