Seems like a bug in ZF2, fatal error on destruct

bug-insert-session-destructor.php

<?php

include 'init_autoloader.php';

use Zend\Authentication\Storage\Session as SessionStorage;
use Zend\Session\SessionManager;
use Zend\Db\TableGateway\TableGateway;
use Zend\Session\SaveHandler\DbTableGateway;
use Zend\Session\SaveHandler\DbTableGatewayOptions;

$config = array(
    'db' => array(
        'driver'         => 'Pdo',
        'dsn'            => 'mysql:dbname=skeleton;host=localhost',
        'driver_options' => array(
            PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
        ),
        'username' => 'myuser',
        'password' => 'mypass',
    ),
);

$dbAdapter = new \Zend\Db\Adapter\Adapter($config['db']);

$sessionTableGatewayOptions = new DbTableGatewayOptions();
$sessionTableGatewayOptions->setDataColumn('data')
        ->setIdColumn('id')
        ->setLifetimeColumn('lifetime')
        ->setModifiedColumn('modified')
        ->setNameColumn('name');

$sessionTableGateway = new TableGateway('sessions', $dbAdapter);
$dbSaveHandler = new DbTableGateway($sessionTableGateway, $sessionTableGatewayOptions);
$sessionManager = new SessionManager(null, null, $dbSaveHandler);
$sessionStorage = new SessionStorage('Zend_Auth', 'storage', $sessionManager);

//$sessionManager->writeClose(); // uncomment this line, and you won't get the PHP Fatal Error