Not sure if this is related, but I didn't have this kind of issue in the very earlier version of VP. I try to click the bottom-left tile multiple times and sometimes it's locked, sometimes it isn't (usually it isn't locked). So AI governor chooses (?) what tile to work and I would like to micromanage it fully. Why doesn't it lock? Until I end my turn, then suddenly all worked city tiles get "locked" - if I choose 2 food tile to be "locked" (governon still controls the citizen/tile), then after the turn it gets locked to the better tile (2 food 1 production).
Also I don't see any "reset specialist" button in the city view, is my VP working as intended? I'm using VP & EUI, trade overview and infoaddict mods.
My changes only affect the specialist slot behavior, so this isn't really related. But I'm seeing similar reports about city plots, probably related to recent blockade/city update changes as DeAnno said above, I'll forward these to ilteroi. As a note, reset specialists button only appears when you have a specialist locked.