Tecibbar, learning a new game is great, so pls continue doing so.
The gov-thing I've encountered more than a few times. IF you want your cities to do exactly what you want, go in and lock all citiziens onto tiles that you want...you got the growth and production as you want. Go to another city, lock in a civilian or two, then enter world-mode.
Now, talk to another civ randomly, like sell open your borders or 1 horse or just say Hello..
Go back to your first city and see if your settings has changed, if not, check second city, if not enter world map and save the game. IF things has changed, you have to save before you go to the AI.
New turn, normally in 98% your governor should keep your first settings, but there is a bug with some versions of the game, as ppl already said. So tricking the game as I did above, "most" of the times keep it as you wanted.
Saved games if it fails, "might" help future patch-makers to clean up this rubbish. Like if the modders get the tools, they would do it in a blink of an eye.