I've been playing for a while on a new world with default settings (and some mods i've been using for a while without issues) and let Bearger live for a year first, then killed him in the next year. Now, since the first day of the next autumn I'm constantly hearing his breathing noise and the character announces his coming about 3 times a day, but he hasn't appeared yet and autumn is almost over. He seems to be stuck in a loop where he is just about to spawn, yet it never happens. Quitting and relogging or changing characters didn't solve the problem.
Create a default world with caves, let Bearger hibernate and kill him afterwards, then wait for the next autumn and the character gets stuck in a state of constant fear that something scary is coming, every single day (with no Bearger spawning). Stuff I did so far was entering caves, using celestial portal, telelocator and the "gonext"-command.