"save" button in tiki-editstructures

I tried to move the "Bootstrap Component XYZ" pages one menu level deeper (in the structure tree), but the "save" button disappeared from Tiki 12 to Tiki 13. So I cannot apply the reorganised structure menu items (pages).
http://pascalstjean-10536-4948.show.tikiwiki.org/tiki-edit_structure.php?page=Bootstrap&page_ref_id=11
usr: admin pw: admin

You can dump a snapshot of the installation (Running trunk svn) with one click at any time in the bugtracker/wishlist:
http://dev.tiki.org/item4948