Lockscreen does not catch first typed character

[Viliam Krizan]

After screen powers off by locking the station (Ctrl+Alt+L), the first typed character when typing the password is always omitted.
This leads to mistyped passwords.

This bug is presented from Ubuntu 14.04. Later ones had gnome lockscreen (probably) which has not had this problem.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.0+14.04.20140423-0ubuntu1.2
ProcVersionSignature: Ubuntu 3.13.0-27.50-generic 3.13.11
Uname: Linux 3.13.0-27-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Sat May 31 00:07:07 2014
InstallationDate: Installed on 2013-01-14 (501 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
SourcePackage: unity
UpgradeStatus: Upgraded to trusty on 2014-05-10 (20 days ago)