Has anyone else had this problem?

I started a new game with "Ork Survivors." The description says "3 Grots, 2 Boys, 1 Boss" but when I go to select colonists, the only options available are Grotlings. I clicked "randomize colonist" 50 or so times but it only brings up more Grotlings, no Orks. The colonist-selection screen shows in red on the bottom "MUST CONTAIN 1 OF" which I understand as a fulfillment not being met.

AFAIK Grotlings just become Gretchen.

As a workaround I spawned a hostile raid with another ork tribe then picked a slugga boy, shoota boy, and a boss out of the group to force-recruit after vaporizing the rest.