Sims getting stuck on stairs

[Wistala]

This happens pretty often and it's really annoying, my sims get stuck on the stairs. It happens to different sims in different houses, so it's not just one sim or one set of stairs. I have to have another sim travel and invite the stuck sim to another location.

[Playalot]

Yep, I'm having this too. Just started recently. Traveling away from the lot seems to temporarily fix it at least.