Infants/Toddler spawning outside of home after loading back in (Patch 1.119.109)

Sent a sim couple to visit the triplet infants family. Problem still persists. Infants 2 & 3 that were lost to the world are now on the ground next to the father. A mysterious butler joined the couple and is now in their group and the front door is not allowing them to knock on it.

The back door allowed them to knock on the door and enter the home.

Infant one is no longer hidden under the crib, she is missing

Switched control back to the infant triplet's family. Infants 2 & 3 are still in the yard on rugs

Infant one is lost in the world miles from home

Sent another Sim to visit the triplet's house. Infants 2 & 3 are still in the front yard on rugs and the back door is behaving like the front door.

Parents nor butler attend to the infants in the yard and infant one is still gone

Switched back to the infant triplet household and the parents finally looked after the infants. The mother could not find infant one, but eventually the butler found her. All three infants are placed in cribs

Switched control to a different sim family. Infant one is missing and mother takes an infant out out of the crib to feed her. 

Switched back to the triplet infant's home.  Infant two was being fed by her mother, is no longer being fed but is now under the bed extremely hungry. Infants one and three are lost in the world.

I like to play generations. This bug makes it extremely difficult to play the game. With the infants lost in the world their needs deteriorate. Leaving the lot and returning or switching households results in locating the infants and trying to increase their needs. 

Ah interesting. I had an issue when I left on a child getaway and the parents were home with the infant (or may have been toddler).

I noticed the infant going in the red for its stats, so when I was forced to switch back to the family to see why it wasn't being cared for-- I found that the infant was on the other side of the neighborhood! I had to instruct the parent at home to RUN across the map to pick up the baby and bring it home...