That is bizarre, the several times I attacked other factions' fortifications and knocked holes in them willy-nilly, I never had to repair them - but everything else got seriously damaged, when I never hurt any buildings like that in battle! It seems you've got a bug, friend. It's probably supposed to be instantaneous and never sustain damage, like roads. You can't repair a hole that is actually there, if the game thinks that it's not damaged to begin with.
What's the point of such reckless damage to a region capital's buildings if the siege is actually supposed to take place at a fortification at the "approaches to the city" on the "city's outskirts"? Any such damage to those buildings in the city - government hall, barracks, artillery arsenal, observatory, admiralty - could only happen after that fort on the city's outskirts where your battle took place, was taken. What if my army doesn't want to damage such buildings by exactly 38.239% percent each (made up approximate figure)?

Yet the building that remains intact is the fortification that I half-razed to the ground getting at the enemies inside. What irony - this is a backwards situation, like your and the enemy army's position are reversed in the battlemap from their strategy map positions. Way to go, whoever made that.
