Thanks for your answer, Scott. Because I've just ended up to read the rules in english, and they say: If the second player played a card of another faction than the leader, automatically wins the trick. It meant "automatically loses the trick", right? Or "the leader wins the trick". I think we have a mistake here with that sentence that could change the sense of the game.
It is a typo I would say.
Should be: "If the second player played a card of another faction, then the Leader automatically wins the trick"