Page title check plained twice

Page title check plained twice, seems the mistake here:

First example:

in /sites/all/modules/contrib/ctools/page_manager/plugins/tasks/page.inc

$subtask = array(
    'name' => $page->name,
    'admin title' => check_plain($page->admin_title),
    'admin description' => filter_xss_admin($page->admin_description),
    'admin summary' => 'page_manager_page_admin_summary',

Title sets with check_plain.

in /sites/all/modules/contrib/ctools/page_manager/page_manager.admin.inc

/**
 * Render the edit page for a a page, custom or system.
 */
function page_manager_edit_page($page) {
  drupal_set_title($page->subtask['admin title']);
  // Provide and process the save page form before anything else.
  $form_state = array('page' => &$page);

Here used function drupal_set_title without "PASS_THROUGH" flag, so check plained in second time.

Second example:
drupal_set_title(t('Create @name', array('@name' => $types[$type]->name)));
I think it is mistake here.

Same mistakes in other places.

So therefore we see not correct page title.