I've actually had this happen to me on both PC and console, so it's definitely not a mod issue. It's the same for me in that it doesn't happen very often, but I have encountered it, even when I've sent all sims back to home lot using occult teleport options so that it shouldn't take long for them to get there. All sims in the household will show as being in self-care mode on the home lot, yet the game stays in the lot they were visiting until I manually follow them home by going to Manage Worlds. It's an odd bug for sure.
This has been happening to me a lot recently as well (on ps5). I just click “Go here” somewhere on the screen and they appear again and then I send them home a second time and it usually works.
