Maybe making sims smarter with toddlers.
I've noticed that every sim that can perform the interaction "Check on Toddler" will try to perform that interaction while, simultaneously, another sim's "Check on Toddler" interaction freezes with all involved sims getting stuck. Time continues to move and needs continue to decay. This leads to critical need failures with sleep, hunger, and fun with toddlers. Toddlers themselves will complicate things because they further interrupt the interactions to help them meet their needs with tantrums.
The only thing that seems to help is locking doors and preventing sims in the household from having access to the toddlers.
In my case, it was the twin teens preventing their parents from taking care of their twin toddler siblings. The child sibling did not interrupt things like the teens did.
In hindsight, I probably shouldn't have introduced the twin teens to their younger twin siblings. It wasn't until the "Check Toddler" interaction became available that things got bad.
This did impact the functionality of High Chairs. Every time a Toddler Cries for various reasons or throws a tantrum, a sim that can "Check Toddler" will trigger an autonomous "Check Toddler" interaction. This trigger adds to the mayhem because some of the sims that are called by the Toddlers are no where near the toddlers and the parent watching them must wait for the other sim to finish their interaction to help the Toddler with their needs. I have toddlers outright glitching out of high chairs and levitating into them. The mechanics are just so dysfunctional once you have the active parents competing with their own children to meet the needs of the toddlers.
The end result includes both the parents and toddlers experiencing critical need failures. The high chair becomes impossible to use because sims will actively take the toddlers out of the chair before they can eat after they start crying from being "Stuck Inside" or "Throw Tantrum". Toddlers that start to get tired because it takes so long to give them food will begin to pass out and that leads to more sims autonomously trying to remove toddlers from their high chair. If the interaction is blocked, the toddlers, ravenous at this point and at risk of being taken away, will glitch out of the high chair to pass out. While this happens, their fun need goes further into decline, and this leads to more crying and tantrums which prevent sims from giving them food or putting them to bed.
The toddlers will be pulled in and out of the high chair in a dance as the toddler calls different sims from the high chair to meet three different needs that turned critical because their hunger need was delayed from the beginning while time and need decay continued to tick away.
Because physical access to the Toddler is required to "Check Toddler" and locked doors can control access and improve the overall functionality of autonomous interactions, I think there should be an option to assign a toddler to a parent or parents in a similar way players can control access to computers and doors.
