When I got to the Domed City, I did everything to undermine the Outlaws.
I gave the weapon shipment to Alois, I gave the capacitor straight to Erich so Ridley didn't manipulate it. I killed Hunter and the others squatting in front of the city, I gave the fake ID cards to Erich and Alois. I restored communications and made the elex-mech exchange. I set everything so the city would be good to go.

And yet, when "The Abessa Dispute" comes about, the Outlaws take over as if I've given them guns, Ridley takes down the shield because I "helped him" and the Albs massacre everybody.

I can live with not having the perfect ending, but this kind of bug is inexcusable. It destroyed my effort good 10h of gameplay back. I can't go and fix it now.

I had this same issue. I am assuming that since I fixed all the Separitist issues and put them into a position on a positive path that they would not revolt.. but in my game.. they did? It made no sense and was pretty disappointing to find them dead. The raiders I guessed would happened like that and it's what I chose. Abessa was the most disappointing part of the game so far, glad to see its more of a bug and not badly written.

Same here. Abessa is overrun by Clerics because I vouched to keep the spearatists in the city and sided with the Outlaws. I did NOT give the module to Riley though.