Here is the part of savefile:
artillery = 30.0000
sp_artillery = 25.0000
rocket_artillery = 0.0000
sp_rct_artillery = 0.0000
anti_tank = 0.0000
tank_destroyer = 0.0000
light_armor_brigade = 13.0000
heavy_armor = 5.0000
super_heavy_armor = 3.0000
armored_car = 5.0000
anti_air = 0.0000
police = 0.0000
engineer = 5.0000
As you can see, the chances to build AT brigades are zero, but he still builds them a bit. May it be because it has not SPA yet and rearranges those 25% between all other brigades therefore some chances are for AT in such case?
artillery = 30.0000
sp_artillery = 25.0000
rocket_artillery = 0.0000
sp_rct_artillery = 0.0000
anti_tank = 0.0000
tank_destroyer = 0.0000
light_armor_brigade = 13.0000
heavy_armor = 5.0000
super_heavy_armor = 3.0000
armored_car = 5.0000
anti_air = 0.0000
police = 0.0000
engineer = 5.0000
As you can see, the chances to build AT brigades are zero, but he still builds them a bit. May it be because it has not SPA yet and rearranges those 25% between all other brigades therefore some chances are for AT in such case?