Unrestricted ajax view and 'access content' permission

If the view access is unrestricted and the users does not have "access content" permission, then an error is displayed in ajax view when using sort, pagination or filter functionality..

  $items['views/ajax'] = array(
  ...
    'access callback' => 'user_access',
    'access arguments' => array('access content'),
  ...
  );

The views module uses "access content" as the permission for the "/views/ajax" menu item - so the ajax callback is getting an access denied response.

repro:
1. remove "access content" permission for anonymous user
2. create a view
- Style: Table (with sortable header)
- Use AJAX: Yes
- Access: Unrestricted
and add block display
3. put the block into region (and display it on every page)
4. logout
5. click on the table header in the view.
result: "An error occurred at /views/ajax."