Update 3.0.3+ shoots wp_dropdown_pages

Update 3.0.2 it works fine, since Update 3.0.3. you shoot wp_dropdown_pages.
Example: you have a custom-post-type (hirarchhical yes, like pages). Then you add a MetaBox to posts, where you can select this custom-post-type (with wp_dropdown_pages).
Like this:

wp_dropdown_pages(array(
            'post_type' => 'customposttype', 
            'id' => 'Test',
        ));

So with Update 3.0.2. everything works fine. Since Update 3.0.3 (all later updates tried), the dropdown do not work anymore. I have created a quick-and-dirty plugin to test it. This creates a custom-post-type and a select field in posts:

class Custom_Meta_Box {

	public function __construct() {

		if ( is_admin() ) {
			add_action( 'load-post.php',     array( $this, 'init_metabox' ) );
			add_action( 'load-post-new.php', array( $this, 'init_metabox' ) );
		}

	}

	public function init_metabox() {

		add_action( 'add_meta_boxes',        array( $this, 'add_metabox' )         );
		add_action( 'save_post',             array( $this, 'save_metabox' ), 10, 2 );

	}

	public function add_metabox() {

		add_meta_box(
			'test',
			'Test',
			array( $this, 'render_metabox' ),
			'post',
			'advanced',
			'default'
		);

	}

	public function render_metabox( $post ) {

		// Retrieve an existing value from the database.
		$custom_testid = get_post_meta( $post->ID, 'custom_testid', true );

		// Set default values.
		if( empty( $custom_testid ) ) $custom_testid = '';

		// Form fields.
		echo '<table class="form-table">';

		echo '	<tr>';
		echo '		<th><label for="custom_testid" class="custom_testid_label">' . 'Test field' . '</label></th>';
		echo '		<td>';
		wp_dropdown_pages( array( 'id' => 'custom_testid', 'name' => 'custom_testid', 'class' => 'custom_testid_field', 'selected' => $custom_testid, 'post_type' => 'test' ,'show_option_none' => '--Please select--',
            'option_none_value' => 0) );
		echo '		</td>';
		echo '	</tr>';

		echo '</table>';

	}

	public function save_metabox( $post_id, $post ) {

		// Sanitize user input.
		$custom_new_testid = isset( $_POST[ 'custom_testid' ] ) ? sanitize_text_field( $_POST[ 'custom_testid' ] ) : '';

		// Update the meta field in the database.
		update_post_meta( $post_id, 'custom_testid', $custom_new_testid );

	}

}

new Custom_Meta_Box;

// Register Custom Post Type
function xyz_custom_post_type() {

	$labels = array(
		'menu_name'             => 'Test Post Type',
	);
	$args = array(
		'label'                 => 'Post Type',
		'description'           => 'TEST',
		'labels'                => $labels,
		'supports'              => array( 'title', 'editor' ),
		'hierarchical'          => true,
		'public'                => true,
		'show_ui'               => true,
		'show_in_menu'          => true,
		'menu_position'         => 5,
		'show_in_admin_bar'     => true,
		'show_in_nav_menus'     => true,
		'can_export'            => true,
		'has_archive'           => true,
		'exclude_from_search'   => false,
		'publicly_queryable'    => true,
		'capability_type'       => 'page',
	);
	register_post_type( 'test', $args );

}
add_action( 'init', 'xyz_custom_post_type', 0 );

With this plugin, you create a new Test Post Type. With Update 3.0.2. you see on Post screen a select with the Test-Post-Type. With Update 3.0.3+ you see the select label, but no select field.