1. After triggering a quest (forget the name) which unleashed multiple armies on one of my poor cities, I lost units and my sovereign took damage after or in between battles, but they either weren't harmed or at least survived the actual battle. My sovereign wasn't touched during the one fight he was in, but still lost half his HPs and showed as being destroyed. Once that happened the "destroyed" units and the sovereign were not present in future battles, although my sovereign still managed to keep taking damage between fights. He lost a total on 60 HPs outside of actual combat. I may still have a save file from just before I saw that, if it would be useful. It happened twice off the same saved game.
2. At some point in my game my Sovereign lost a point of movement. If I look in the details it shows all of the movement he should have, but in battle, on the map and on mouseover displays he has one less movement.
3. Periodically I've had issues with movement. It is as if there is an invisible barrier that my stack of champions could not move past. I have had to use two different methods to fix it. The first time I just saved and reloaded and it worked fine. The second time that didn't work and I had to move them one at a time. Once it started doing that, every time I clicked to move them it just made bong-like sound and did nothing.
If there is more information I could make note of, or if save files would be helpful, let me know and I'll try to keep some notes and/or upload some save files someplace.