permalink appears twice with entity_translation

Problem:
Permalink setting appears twice when editing a node with entity_translation. See attached screenshot.

Conditions:
* Drupal 7.41
* Panopoly Admin 7.x-1.30
* Entity Translation 7.x-1.0-beta4

Steps to reproduce:
* drush en panopoly_admin
* drush en entity_translation
* edit basic page content type (admin/structure/types/manage/page), go to publishing options (vertical tabs at bottom), Multilingual support, and select Enabled, with field translation, save
* create a basic page and save
* edit the same page

Proposed solution:
Remove the #group attribute from the path item in form array.
panopoly_admin.module, after line 160, add the following

unset($form['path']['#group']);

I don't understand why entity_translation triggers this