In this video I demonstrate 4 different bugs.
2:26 - If the lead unit of an army dies the army disbands and forgets it commands.
4:00 - Reinforcements get confused by queue commands and don't form up with the requesting army. At 7:36 units stop following orders.
8:13 - When army A captures a region that army B is also commanded to capture, army B will stop in place once army A completes the capture.
9:05 - When you cancel a reinforcement unit in the factory queue, that factory is unable to process any more reinforcement requests.