Game keeps changing my squad and tactics?

(I play on PC on EA App)
Does anyone know how to save the squad and tactics in manager career without the game constantly messing with it and randomly changing all players to random positions?

I created three tactics (defensive, normal, offensive) i set everything up, saved it. Then i wanted to create and save second "squad" (i am not sure how is it called in english, i play the game in czech). So i created it, put different players on the starting line up, saved everything. Now when i want to switch between them it puts randomly striker to LB, it puts my CM to RW, my CB to LW etc and i have to switch everyone again and again and again. Sometimes even if i dont switch between the squads it messes the starting lineup completely. i do something on the screen where you set your starting lineup, then i go back, it saves, and next time when i go to the screen where you set your starting lineup the players are again randomized and on different positions.

Any tips? thanks