$form['cron'] title and description are not passed through t()

The following form definition code does not use the t() function for text:

    $form['cron'] = array(
      '#type' => 'checkbox',
      '#title' => 'Use batch processing.',
      '#description' => 'Puts all Mailchimp subscription operations into the cron queue. (Includes subscribe, update, and unsubscribe operations.) <i>Note: May cause confusion if caches are cleared, as requested changes will appear to have failed until cron is run.</i>',
      '#default_value' => $config->get('cron'),
    );