All questions regarding mapmaking for Heroes of Might and Magic 3: The Shadow of Death.

Fellow mapmakers, I have a question. Has anyone encountered the issue where an enemy hero walks around for a bit and then stops in one place as if rooted to the spot? I need to make it so that the enemy hero walks around a specific area endlessly and doesn't stop anywhere. I've tried assigning him both "patrol 10 squares" and selecting "nothing." But in any case, he still makes 3-5 moves and then stops... completely.