I have two other civ's pretty close to me. I'm Scotland, I have America and China. China forward settles pretty close between myself and America. Next China declares war on me. Most of my units are close to this new city that they just settled so I easily take the city. I have the diplomat governor in the city closest to this new city of china's that I just took PLUS i have the civic to give me +2 loyalty with a unit fortified. Within 4 turns the city flips to a free city. Ok so I retake it one turn later but I forgot to put the diplo governor in that city so 6 turns later it flips back to free city. So next turn I take it back, I put the diplo governor in the city but it takes her 5 turns to be there. I have a unit fortified in the city. 7 turns later the city flips back to free. There's nothing I can do. I checked the loyalty and it adds up with all my bonuses I'm getting like +9 or something loyalty but the opposing pressure from cities is +30. There's nothing I can do to keep this city so it's perpetually flipping back and forth. It's literally flipped on me 5 times. It's been super annoying and leaves me thinking this can't be what they intended.