Non-Infant Sims have infant moodlets/sit like infants

Hi! I've noticed that some of my sims (usually teens) have infant-specific traits and moodlets. They also sit on the floor how infants do. I've tried aging them down to infants, removing the traits...

live mode

lonne2000

Newcomer

1 day ago

My sim one sim specific falls trough her legs around every 10 seconds.. is very annoying.. i dont use mods or whatshowever.. i own almost every pack of the sims 4 and i never had so many bugs..