Default content enabling during profile installation

On the app selection screen in installation process there is checkbox called "Install default content" with description "By selecting this box default content will be installed for each app. ... ". But with this checkbox enabled only server 'default content callback' is called:

  if (!empty($_SESSION['apps_default_content']) && isset($_SESSION['apps_server']['default content callback']) && !empty($results['enabled modules'])) {
    $function = $_SESSION['apps_server']['default content callback'];
    if (function_exists($function)) {
      $function($results['enabled modules']);
    }
  }

I think there should be also call demo content enable callback of each enabled modules (apps).