[version 1.00 build 11956.1436036 Allegiance_1 beta 2, few mods (camerax2, 4seasons, garnison)]
I sieged Nothinghamtum (or something like that). The city is divided by a river in two 'blobs", with a bridge destroyed, but the wading through the fort is possible to reach the other blob.
At the start I positioned all my army and siege apparatus at one side. The defending AI anticipated, and positioned their army in front of what seemed the point of impact.
I started to move a tower, way down around the city, to the other blob without defenders. The AI stood still, and did nothing.
I captured the city with one unit: climbed the wall, ran through the city, captured the flag and waited the countdown. The AI did nothing. I won without a single loss.
This should not happen. This is clearly a fault in the behaviour of the AI, or is it?