Wall damage bug or feature?

[:1]

Sometimes when my walls are under attack I can't repair them. I send a villager to do it, and they work on it, but the health bar gets all freaky and flickers between lower and higher health values but continues to go down overall. I've also seen situations where attacking one section of wall causes the entire stretch of wall to be damaged no matter how many sections long it is, I'm not talking splash damage I'm talking about a few archers attacking a single wall section and taking down the entire surrounding walls of an enemy base at once.

I think it's a bug because I've only noticed it happening with preset walls, IE walls that were there when the map began. I've also noticed it seems to happen when the walls are on fire though, so I dunno if that's just coincidence and a normal part of the destruction effect or if walls can actually somehow catch fire and spread. I highly doubt the later, but it would be interesting.

|||That is functioning as intended, you can't just sit behind a wall and repair itindefinitelywhile its being attacked :p|||Ah, very cool. Guess I'm going to have to pay more attention to that when I play defensively.
|||At least vs the AI walls getting less damaged if dont surround your entire base fully. One or two small holes in the wall often lets the enemy units follow your walls to that holes. If you guard that way with towers and ranged units behind the walls, you should have far less problems with them.