Ticket #15480: 15480.diff

wp-admin/js/list-table.dev.js

@@ -188 +188 @@
         $('th a').click(function() {
                 var orderby = $.query.GET('orderby'),
                         order = $.query.GET('order'),
-                        $th = $(this).parent('th');
+                        text = $(this).text();
 
+                var $th = $(this).closest('table').find('th').filter(function(i) {
+                        return $(this).text() == text;
+                });
+
+
                 if ( $th.hasClass('sortable') ) {
                         orderby = $.query.load($(this).attr('href')).get('orderby');
                         order = 'asc';