1.2 ends after beating the final F. sanguinea wave even if mole crickets are present on the map.
1.1 once had the same bug but it got fixed there.

To be fair, 1.1 requires you kill everything.  2.2 merely requires you have the correct amount of ants and can beat the final slave-maker attack with them. 
And on the sixth day, God created ant in his own image, and gave them dominion over the earth and all of its creatures.  Amen.