Can't activate goblin campaign?

I’m on the latest alpha, and for some reason it only pops up about 50-75% of the time when I play? Am I doing something wrong, or are there things to avoid to make it not break? Thanks!

Edit, more info: I’m not playing with any mods, and he has not spawned in my map at all so far. I have 17 hearthlings and aprox. net worth of 4000. If any more info is needed I’ll be happy to give it :slight_smile: