Chevals and Fences don't work

- Chevals and fences don't work. The attacking nobles just walk right over them as though they aren't even there. And while fences keep animals in, the animals can apparently open the gates right up and walk themselves right out of there. Chevals should do damage to enemies as they cross them (assuming they actually cross them at all) but they don't. It doesn't even slow them down. Chevals are useless.