Launcher Doesn't Auto Hide After Selecting Workspaces Icon

[Glenn Moloney]

When using Unity 2D, if the launcher is set to auto hide & if either the workspaces icon on the launcher or using the super key + s is selected, once you select the virtual desktop the launcher refuses to auto hide. The fault will stay in this condition until you log out then log back in.
This is unfortunate as it makes the workspaces feature useless.
See attached video for further information.
Cheers.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity-2d 5.8.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic-pae 3.2.14
Uname: Linux 3.2.0-23-generic-pae i686
ApportVersion: 2.0.1-0ubuntu2
Architecture: i386
Date: Fri Apr 13 21:11:09 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta i386 (20120328)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_AU:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: unity-2d
UpgradeStatus: No upgrade log present (probably fresh install)