The pathing is a little sketch in cities, I agree. One thing that may be a city bug was I had a First Cohort Legion in a Custom battle with the barbarians seiging Rome. I had a little time to spare as the enemy were approaching so I was looking at my units and had never seen them form the teustudo (sp?) so I clicked the button and my men started marching sideways. I thought that perhaps they needed some room to do it but they kept walking until I told them to stop. I never was able to make them get into the formation as they kept doing that - and it was in the huge plaza in the center of Rome.... so that was odd

also I notice that units can't find the quickest way to get from one place to another in cities so it's a constant micromanage.