If debugging is on (_PS_MODE_DEV_ set to TRUE)
On a fresh install there is a warning on line 1542 in
/classes/controller/AdminController.php in function
addToolBarModulesListButton().
Because of the warning xml files are not populated with data.
Warning: simplexml_load_file()
1: parser error : Document is empty
1st: The function will return the product attribute id's with the list.
2nd: If product attribute id is passed to the function it will return
only the image id of the given attribute.