14.04 beta: login screen goes blank, username button disappear

[Johannes]

This bug can be easily recreated in Ubuntu 14.04 beta:

1. Start computer
2. Click a username and enter false password
3. Wait a few seconds until you see the text in orange that tell you something is wrong and that you should try again.
4. Click "Abort" button
5. Click on a username.

- Now the login options, everything in the middle of the screen is all gone

6. Wait about 20-30 seconds and all login options will come back, normal users shutdown after 10-15 seconds. If the time to come back was less than 3 seconds I would not notice this bug, but maybe it is a security issue, that should be fixed or an issue that is fixed with some ugly work around.

Issues with login is not nice and can be major security issues.

DistroRelease: Ubuntu 14.04
Package: gnome-settings-daemon 3.8.6.1-0ubuntu10
ProcVersionSignature: Ubuntu 3.13.0-18.38-generic 3.13.6
Uname: Linux 3.13.0-18-generic i686
Architecture: i386
CurrentDesktop: GNOME
InstallationDate: Installed on 2014-03-04 (25 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha i386 (20140226)