<URL: http://bugs.freeciv.org/Ticket/Display.html?id=40557 >
There's some problem in the sequence that updates city borders when
city size changes. Borders change to new size one 'step' afterwards.
This is most easily observed by building settlers so that city
alternates between two sizes. Borders expand when ever city shrinks,
and shrinks when city grows.
Most likely vision site size is not yet updated when
city_refresh_vision() is called.
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