I'm not sure if anyone else has encountered these issues, but with the Syncretic Evolution trait there are several events that treat both species as though they were the same.
Biggest example that I encountered was The Worm event chain when a scientist modifies your populace whatever choice you make applies to both your primary species as well as the servitude species. My friends encountered a couple issues as well where events treated them like 1 race, but I don't know specifics there. Hopefully I can get them to drop in and share, but point being several game events treat the 2 species as one and the same which is clearly problematic.
Biggest example that I encountered was The Worm event chain when a scientist modifies your populace whatever choice you make applies to both your primary species as well as the servitude species. My friends encountered a couple issues as well where events treated them like 1 race, but I don't know specifics there. Hopefully I can get them to drop in and share, but point being several game events treat the 2 species as one and the same which is clearly problematic.