I am playing the mod since a few days, I am doing a campaign with the Ducato di Savoia ( minor italian faction)

I did a battle with light infantry and everything was fine, the next battle I did, light infantry didnt show the light infantry tactics button, the one that makes them crouch and spread out instead they now can form a square and do advancement fire,I checked all my light infantry units, even new recruits, don't show the button anymore, its like the game recognizes light infantry as line infantry now.

I tried to dispute custom battles, and the button works fine there. any suggestions on what to do? thank you.