Ludens when that happens your units are prolly to close to the combat, if you position them a bit away from the combat they should work normal.

whats also annoying is thaT units get the fighting icon before being engaged...theyre just close to the enemy. they wont charge but just walk in fighting mode and wander around a bit. this mostly happens when youre atttacking a towncenter or fighting before a gateway or narrow streets. its prolly caused by to many units engaged wich usually is the situation in these spots.

i also noticed that units than can fire projectiles wont fire on units on the wall when the unit that must fire is on the inside of the wall. they work correctly however when standing on the outside of the wall