Another way to fix this problem would be for both the beta and production versions of the site to be served from the launchpad.net hostname, not from edge.launchpad.net, using a toggle in the header or footer of every page. (The toggle could use a cookie that persisted even after logout, so as to let beta testers test the logged-out versions of pages too.)
Another way to fix this problem would be for both the beta and production versions of the site to be served from the launchpad.net hostname, not from edge.launchpad.net, using a toggle in the header or footer of every page. (The toggle could use a cookie that persisted even after logout, so as to let beta testers test the logged-out versions of pages too.)