Cookie销毁在CakePHP 2.7中无效

Question

非常直接：

public function demo(){
    $this->Cookie->delete('Auth.User');
    $this->Cookie->destroy();
    if($this->Cookie->check('Auth.User')){
        echo "yes";
    }else{
        echo "no";
    }
    die();
}

始终获得“是”。使用CakePHP 2.7.3