Wikimedia Bugzilla is closed!

Wikimedia migrated from Bugzilla to Phabricator. Bug reports are handled in Wikimedia Phabricator.
This static website is read-only and for historical purposes. It is not possible to log in and except for displaying bug reports and their history, links might be broken. See T4155, the corresponding Phabricator task for complete and up-to-date bug report information.

http://test.leuksman.com/index.php/FiverAlpha:Extensions/test
double checked at
http://jadesukka.homelinux.org:8180/betawiki/Betawiki:Extensions/test

See Image: http://jadesukka.homelinux.org:8180/betawiki/Image:Parent_page_01.jpg

Description: "parent page" is not shown in project namespace maybe also in some
other namespaces

Regards Reinhardt [[user:gangleri]]

That's not a bug, it's a configuration option, see DefaultSettings.php

Subpages are not on by default in the project namespace. You'll see it works fine in eg user: 
namespace where they're on.