Infants/Toddler spawning outside of home after loading back in

This has been happening in my game too during the past week. I have taken two different sims to the studio in Del Sol Valley to put down their celebrity tiles, and each time there was a toddler there that belongs to Thorn and Octavia and neither of them was around. Since I was not playing their household on both occasions, I have no idea what could be causing them to be there. The first time I was able to get my sim to pick up the toddler and take her home. The second time last night, the toddler vanished right as I told my sim to pick her up. 

All packs, never cc and mods removed.