Solved BookEditEvent does not fire

Version: 1.9.2

Hello,

like the title says i got a strange problem where the BookEditEvent does not get fired.
Yes, the listener is registered properly, for debugging i added some other listeners which work fine.

Code:

import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerEditBookEvent;

public class Umfrage_Listener implements Listener{

    @EventHandler
    void editBook(PlayerEditBookEvent e) {
        e.getPlayer().sendMessage("DEBUG");
    }
  
}

I really dont know whats going on, help is very appreciated.


EDIT: Nvm, something was wrong with my version...