Summary:
I have two fences on either side of the village, both with fence gates. One is respected by hostiles, the other is not. No clear reason why.
Steps to reproduce:
- Load my save.
- Spawn a hostile mob outside the fence, on the side by the trapper zones.
- Observe them waltz right through the gate unhindered. Note that because of the extra pathfinding distance now, mobs are actually pathfinding up and around my village to use that gate instead of the other one.
Expected Results:
Nice, peaceful village with the riff raff kept safely outside.
Actual Results:
Riff Riff, Riff Raff Everywhere. 
… but hey, at least they’re not spawning in the middle of town anymore! 
Attachments:
It should be present in both Day 7 and Day 17, but you’ll get more action on the later game save.
Version Number and Mods in use:
A14 D2820 x64