The whole tactical system is absolute trash these days. Before they changed it, the full customization of your squad was a way to deal with inconsistencies and bugs in the game. Now that they took that away, it actually shows how bad and poor this game is.
And then there is the saving issue. IF you're lucky to save your changes - because that is also not working the way it should - you will find out that what you changed has little effect, and, even worse, suddenly players have swapped position for no reason. Your attacker is suddenly an RM, your RM is in the CDM position, etc.
Pretty embarrassing to ask people to pay for this, if you think of it