PC - no hunters in solo while playing monster


I just played 4 solo matches. None of them had hunters. I would scare off birds, leave tracks, evolve in bad places & once stage 3 I would begin attacking the generator then stop & wait for hunters to show up, but they never show up.
24 hours ago this wasn’t a problem.
This is in hunt mode btw.


Tried defend mode as monster. Hunters were there until I killed them but then they wouldn’t respawn.
It seems anything to do with the drop ship makes the hunters bug out.