Career Mode Bug: Player morale doesn’t update, blocking contract negotiations

About 60% of my players are unhappy, and I can’t renew their contracts. The game automatically puts them on the transfer list, but I don’t have enough players in my squad. If I try to buy new ones, one of my good but unhappy players just leaves — and I can’t do anything to stop it. It’s really frustrating. The player starts almost every match, but his happiness hasn’t increased in two whole seasons. Please fix that.