Metatag "'" in place of apostrophe in meta title tag

I've a view that is filtering nodes based on a taxonomy term and the title is overridden by the context argument "%1".
When a taxonomy term has a quote it's displayed as '

Disabling the module "Metatag: Views" all works good.

Debugging in the deep the issue i've discover that the problem is the sanitization applied by the DrupalTextMetaTag->getValue() function extended by DrupalTitleMetaTag.

So DrupalTitleMetaTag needs to redefine the getValue() function, in my solution i've set the sanitize option to false and used filter_xss() instead:

class DrupalTitleMetaTag extends DrupalTextMetaTag {


  public function getValue(array $options = array()) {
    $name = "metatag:" . $options["instance"] . ":" . $this->info["name"];

    $options += array(
      'token data' => array(),
      'clear' => TRUE,
      'sanitize' => FALSE,
      'raw' => FALSE,
    );

    $value = metatag_translate($name, $this->data['value']);

    if (empty($options['raw'])) {
      // Give other modules the opportunity to use hook_metatag_pattern_alter()
      // to modify defined token patterns and values before replacement.
      drupal_alter('metatag_pattern', $value, $options['token data']);
      $value = filter_xss(token_replace($value, $options['token data'], $options));
    }

    $value = strip_tags(decode_entities($value));
    $value = trim($value);
    return $value;
  }
}