Yeah, I had got that figured out, but just changing garrison seems to have the same effect.Hm. Are you sure that it wasn't caused by raising the taxes to a level above 'low'? When you do so, a FM will lose his 'governor' trait, which would explain a dramatic loss of PO.
Would changing taxes up then back down before ending turn still end the 'governor' trait?
I'll pay closer attention and try and figure out if more is going on. I wasn't really worried until my 180% to 40% came out of the blue.
The completing gov. building leading to 'between turns' unrest is real though. It's been around for a while, and it is not a big problem except when you have an unrepairable building which gets damaged or the governor is killed. That is a pain.