#states not affecting visibility/requirement of managed_file

Cannot affect the visibility or requirement of managed_file with states. Identical to this issue:

https://www.drupal.org/node/1118016

With this definition:

$form['type'] = array(
  '#type' => 'select',
  '#options' => array(
    'video' => t('Video'),
    'audio' => t('Audio'),
    'post' => t('Text'),
  ),
);

$form['audio'] = array(
  '#type' => 'managed_file',
  '#title' => t('Audio File'),
  '#states' => array(
    'visible'  => array(':input[name="type"]' => array('value' => 'audio')),
    'required' => array(':input[name="type"]' => array('value' => 'audio')),
  ),
  '#upload_location' => 'public://',
  '#upload_validators' => array(
    'file_validate_extensions' => array('mp3 wac'),
    'file_validate_size' => array(1048576),
  ),
);

I expect the visibility of "audio" to change when changing the value of "type". What happens is "audio" remains visible and not required. Simply changing "managed_file" to "file" brings the expected behavior.