The ezmbpaex extension is shipped with eZ Publish 4.3 ("full" download) but does not work with 4.3. The reason is that it overrides node/view/full.tpl for users and groups, but there is no override for admin2. If you use the template provided for the admin design, it will work only partially: Password expiration is shown, but subnodes are not visible.

Solution: Make templates for admin2, in addition to admin.