Cookie Tab not working anymore

Clicking on an item within Tab 2, 3 etc... Doesn't go back to the proper tab. Always goes back to Tab 1

http://pascalstjean-10536-4948.show.tikiwiki.org/tiki-admin_modules.php?um_edit=menu_42&cookietab=2#editcreate

as you can see in the link, "cookietab=2" this variable is not being supported right now