I have 2 points.
First, I found the ford on the river is too narrow, mostly only one army can cross. So sometimes, different armies come from both sides of the ford and trap in the ford, nobody can move unless one army retreat. Such things also happen in the previous version.
And second, this is in the warband version. I still didn't find the reason. I chose Lothlorien and we attack Moria with Rivendell. Just after several days that Moria was defeated, which is the 58th day, the game crashed. I have the save data just less than a day before the game crash. I tried many times, no matter what I did, camp, stay in the city or attack an army, the game will always crash at the same time.