Sims 4 bug in toddler - teen?

[superkitt14]

Every time I add toddler - teen into my game, I lose the ability to select actions for them because it gets dropped before it is completed. For example, my sims cannot put a toddler in a high chair; they pick up the toddler but instantly the action is cancelled. Or the toddler goes to interact with pets and the action gets cancelled before it begins. This does not happen with young adult - elder sims, only with anything below. Every repair technique I have done to fix this problem has not worked and this has been ongoing for months. 

[EuphorialQueen]

@superkitt14 
Toddler actions or interactions can be cancelled by other Sims trying to interact with the toddler at the same time.
Example:
One Sim tries to put toddler in high chair.
Another Sim also decides to autonomously do something with the same toddler.
This is an unfortunate consequence but it does happen.

Do you play on PC / Mac / Console?
Any Mods or custom content of any kind can also cause issues.

[PugLove888]

@superkitt14, in addition to what @EuphorialQueen  stated, I would advise never using the highchairs!  They are evil and never work right.  Toddlers can easily grab plates of food off of counters, tables, and of course the floor.  Toddlers will usually eat in the nearest chair that isn't pushed up against a table, or they might eat on the sofa, a bed, or even the floor (but that is rare).

[superkitt14]

This issue has still occurred even when it is one on one (just the adult and the toddler in the game). It is essentially any interaction that you try to do with toddlers. Even things such as teaching the to talk, walk, reading a book to toddlers, using the play interaction, etc. 3 Sims work fine when they are adults and elders but then in every save file I have done, whenever there are toddler - teens in game, all interactions get messed up. I use PC and I do use cc in game, however, before I started with cc this issue was occurring. 

[Vatzfu]

When I need something done to a toddler, I give the order from them instead
Select the toddler, then click an adult or something and ask them what you want, like you'd need to with an "independent" toddler, it seems to work way better than interacting with them through an adult ( make sure the adults aren't doing something else )