Just as the title describes, I cannot for the life of me get my adult sim to practice standing with their infant. I noticed this after the January 2026 update. I can click on the interaction, but it never appears in the action area. Not even briefly before cancelling. Maybe I'm doing something wrong, but the option isn't greyed out and I'm doing it in a place with a surface the infant can hold and has lots of space. I have no idea how to encourage the infant to stand without this interaction as well. I've tried going to manage world and reloading the lot (which fixes a lot of issues like this) but it still persists.
I've checked with other saves where the infant already learned to stand milestone and it works fine. I initially thought it only affected infants who didn't unlock it yet, but an infant that I made after the update can practice standing just fine. So it looks like it's affecting my infants I made before the update who haven't learned to stand. That or I'm doing something wrong. I have a video attached below to show what I mean.
Edit: I was able to unlock it by working on his fine motor milestones and playing with blocks near a chair. I don't know if the animation was glitching or if it was bugging out, but now that he's learned standing, he's able to practice standing with an adult.
