I have the bug where Curie runs back to vault 81 upon being dismissed, regardless of what settlement she is sent to.

The most recent occasion, I dismissed her to Abernathy while standing in Abernathy. There is a fence around the settlement, and Curie's pathfinding was preventing her from leaving for Vault 81. So I added 6 mutfruit to the melon patch in back. Sure enough, the food production went up by six, and when I targeted Curie in Build Mode, she was highlighted along with the new Mutfruit.

So I left, came back, and she was gone, having ported to Vault 81, where I found her a short time later. Here's the catch - she's still working the crops at Abernathy... from the medical center at Vault 81.

Could be worse, for sure.