Multiple nannies showing up

Yep, just happened to me. Have free services and tried firing all the ugly simsmas sweater nannies and they came right back even after a save/  log out.

I’ve managed to reproduce this bug simply by

1. Having an infant
2. Hiring a nanny
3. Traveling out of the lot
4. Returning home

Upon return, the original nanny will still be on the lot, and a second nanny will spawn, with the “Hello!” notification and all. Both will need dismissing and will charge the household. 

Have this issue, every time you leave the lot and return a new nanny will spawn. I currently have about 6/7 nannies. Amusing but they keep getting in each others' way and the kids aren't being cared for. 

I'm currently only playing with the base game