Comment 1 for bug 1165702

This is by design..

See comment from Gabriel on : https://review.openstack.org/#/c/24878/

"There's actually a very explicit reason we *don't* isplay the messages on the login screen: it can be a security hole and/or hugely confusing by way of displaying accumulated messages that should only be presented to a logged in user to whomever next lands on that login page with that browser.
Somewhere there's a ticket about having a better way to filter messages that should *only* be displayed on the login screen, but that hasn't been implemented yet. I'm open to other ideas/implementations, but for now putting the messages back into the login screen isn't an option."