I've noticed that in my games, when I put archers/xbowmen on the walls, they refuse to fire at all. When I turn fire at will off and target an enemy, maybe 1/3rd of the unit actually shoots. The bow and arrow icon is always there, and the status appears to stuck at "firing missiles."
Does anyone know what's causing this and how to correct it? Thanks.
EDIT: Forgot to mention, I'm on 6.0 with no other mods.