Bug based on canceling the PlayerInteractEntity for an Ender Dragon

notes.md

Despite the name of the plugin/file, this does not actually seem to occur on Spigot, rather on Paper.

SpigotInteractBug.java

public class SpigotInteractBug extends JavaPlugin implements Listener
{
    @Override
    public void onEnable()
    {
        getServer().getPluginManager().registerEvents( this, this );
    }

    @EventHandler
    public void onInteractEntity( PlayerInteractEntityEvent e )
    {
        if( e.getRightClicked() instanceof EnderDragon || e.getRightClicked() instanceof EnderDragonPart )
        {
            Bukkit.broadcastMessage( "Canceling interaction event for " + e.getRightClicked().getType().name() + ", uuid " + e.getRightClicked()
                    .getUniqueId() );
            e.setCancelled( true ); // BUG: Canceling for EnderDragon will cause a server exception after.
        }
    }
}