Once again having the issue where every interaction with a toddler cancels, so I can't feed them, put them to bed, etc. Usually I work around this by just directing the toddlers themselves to do things, but I happen to be playing in the one of the big fancy Get Famous mansions with a staircase going up to the main entrance, and my toddlers can't climb stairs yet so all their interactions that involve going inside just cancel as well. They can't even perform Discipline interactions, which typically isn't an issue as it's just the adult Sim clapping while the toddler continues whatever they were doing.
Playing on Mac, no CC or mods. I have several EPs/etc. but this seems to be an issue with base game features.
Edit By crinrict: Adjusted Title to better reflect the issue