Shieldwall not holding formation.

WRE Auxulia (the ones with the nice breastplate) do a slow forward creep while in shieldwall formation, even when told to Stand Ground. This pulls them out of line and exposes their flanks.

No event locator button for enemy units defecting to your side.

Not really a bug, but it can be difficult to find units that have rebelled from their faction and joined you. One of the magnifying glass locator buttons on the notification scroll would be very useful.

Hordes do not properly draw their numbers from the town population

See posts 1 and 10 in this thread.

Quote Originally Posted by A.Saturnus
Strangely, the people of a horde don´t come from the city that generated the horde. If you start with the Goth, you have one city with 11507 inhabitants. Your troops are 302 in the city and 196 in a stack nearby on large units. That makes 12005 people under your rule.
I did horde immediately and got several horde stacks that amount to 5586 men in total. But the city I just abandoned had still 11507 inhabitants! I retook the city and the number of inhabitants rose to 13061. The increase was taken from the horde stacks. I still had 4032 men in stacks. If you add that to the people in the city, you get 17093. Thus, by abandoning the city and immediately retaking it, my population increased by 5088 people. Where did they come from??

So, although a horde is supposed to be 'a people on the run', its members are not taken - unlike normal soldiers - from the population resource.