I think there is a bug, once you use a individual attribute training, after finishing that training players stops developing... For example, I bought Pedri with potential up to 93, while currently being at 87, I boost his defense skill via training and he rose to 88. Trough next 4 years all of his abilities stays frozen, he plays as regular, no injuries or others factors... Same goes for any other player who's been trained this way... Bug occured also in 1.1.1 and previous versions
Thank You