Dreadnought Hideout NPCs disappeared after day 1

I have the dreadnought hideout, and the first day of release all the NPCs were in my base. The very next day it was a ghost town. I assumed it may of been unintended so they were removed with the intention of unlocking the NPCs after I met them, but that doesn't seem to be the case. The only NPC that I managed to get in my base was the hooded one. I did every quest with Alva and no option to recruit her has shown up. Am I missing something obvious, or is it just bugged?