I understand we need a faction that can one shot all defenses, but why it comes at~ 0.1 evolution? I would suggest to make it a late game faction.
Br
Adam

Yes, this is late game faction. How did you get them at 0.1%
The only chance to get them on a small evolution is to set evolution using the command, wait for them to appear and set evolution back. What has already appeared will definitely come to you.

I need your save to answer to the point

I already turned the faction off sorry. But figured out I have migrated from the original rampant. Maybe that caused the issue.

Be careful. After the fixes, most of the settlement attempts are successful. As a result, the migration in fact became a survival mode.
The siege mode, enabled by default, provides enough reasons to control the map - more brazen bugs still need to be looked for...