don't know if it is a genuine bug or a mechanic i don't understand, but for the last 10 turns all my population is immigrating to a newly conquered city. That city has low happiness, low amenities and low civ score while my other two cities are "very civilized (79)". It is hurting my private economy alot since there aren't enough workers for all the jobs in the cities people are moving away from...
And to compound the problem, since that city has low happiness people are joining the free folk!
