I'm not experienced with sim toddlers enough to know if these are long-standing bugs, new ones, or unique to Ambitions, or to my game. I haven't had much luck with googling them, either.
1)Toddler interacts at a distance: I queue the parent to interact with the toddler (feed, talk, etc.) but as the parent gets near, the toddler stands up, walks far away to the opposite side of the house or outdoors, does a stuttery turn, then waits...then the parent leaves the toddler's original location to meet the toddler in the new place before interacting with him/her.
2)Parent can't queue up an interaction with the toddler at all. It appears briefly in the queue and then vanishes immediately.