Followers won't follow me with Ultimate Follower Overhaul installed

What else is in the load order that touches followers? That's almost always it. UFO really doesn't like sharing, so if you've got a custom follower with its own scripts, or another follower manager, they fight over who's in charge and you get exactly this, followers going home after fast travel. Try dismissing them and re-recruiting through UFO's own dialogue first. If that doesn't hold, a lot of oldrim players moved to Amazing Follower Tweaks for this reason, but don't swap them out mid-save without a backup save first.