Just like the title, I didn't get any slave ships, wanderers, wounded from dropships, or any pirate captures after about day 20. I'm almost at day 100 with only 12 colonists and the only reason I survived is because of lots of blasting charges, lots of rocks and slag that I put in front of my base as a killing field, and the fact that almost every single raider carries an M24/M16/Pulse Rifle that I sell from more metal to make more blasting charges.
build 0.0.254 running 64 bit windows
Did you start a new game after updating?
This isn't a bug, it's just the storyteller being adaptive (perhaps a bit too roughly).