Take a screenshot for us! (also be sure to select the city so we can know it really belong to Angola)

Then report with ticket, most lower-right of the in game screen

what type of units is he mobilizing? nat'l guards only need recruitment center

cuz hes moving the capital

Huh

But it's normal, none bugs there, because i build HQ in northern city, during in process i saw norther city HQ, mean while former capital its still there, after building has ready, former capital HQ building diasapears of city, and northern city become new capital city.