That is incorrect im sure , not once when i set my lineup using the correct protocols did i fail to get 48mins on my desired trainee. Only when i made a mess of the lineup or the trainee fouled out did he not get 48mins no matter the score.
The protocols i follow are something like this ,
a a a
b f f
c g g
d h h
e i i
This is 9 letters so 9 players. Notice how there is no positions left blank and there should be exactly 9 names players in the lineup. It is also possible to have other players play 48 mins as well by taking another player out the lineup and having the other player cover his backup and reserve position.
This post is not directed to you Manon as i know you have extensive knowledge of this game and will already know this.
What im saying is you cant be too complicated with your lineup and expect 48mins , it needs to be very basic like the depth chart i showed above.