Default Governor starving city for no reason

[FeiLing]

Version: 1.0.1.511

Starving for no reason.Civ5Save

Note: The city is not on production focus but on DEFAULT focus.
I'm in unhappiness, so working food is less effective. That however is no reason to let the city starve (screen1: Starvation). On screen2 (Stagnation) you can see that the city would be able to not starve, if the governor wasn't mad. There's no excuse for this. The question though is is there is a calculation error or if the governor wrongly was programmed to not work food tiles in times of minor unhappiness, even if it would prevent starvation.

Starvation:

Stagnation:

PS: Switching around the focus with citizens not locked (to make it re-calculate things) would still have caused starvation on Default Focus.

 

[Optional]

It could be that a dislike of water tiles is to blame.

You see it with tiles being picked for cultural expansion as well. The governor will gladly pick a bland gras tile, which is , over a whale, which is , even when the whale isn't further away at all. We all know which tile is better...

Edit to add:
What possibly could be a reason for this dislike of water tiles is that the developers tried to prevent culture expansion over other continents. I remember having seen a very old screenshot, probably in the bug section as well, showing some town which had tiles on another continent, populated by other civs, and the person who had uploaded the screenshot commented that this type of expansion shouldn't have happened.

 

[FeiLing]

The rules for border expansion were designed to not work strictly after the principle 'best tile first'. Instead to make the border expansion more realistic harder to access tiles aren't necessarily gotten even if they were the best tile. That concerns forests, hills, rivers coasts/lakes, marshes and mountains.
Which tile is worked though has nothing to do with that. For that matter only the best tile (best according to the focus) is used. Only for e.g. if a mine would not cause the production to finish earlier (same number of turns no matter if the mine was worked or not), then the governor would rather chose a food or gold tile or even a specialist instead of working that mine. This again though is ignored if the city is starving (at least on default focus).
The situation in the OP is working against all observable rules.

PS: Now that I finished the TSG I loaded this one again and let the city starve instead of setting it manually/forced to how it should be. And it did starve (could have imagined the governor might turn sane once/while I click the next turn button, but he didn't )