Tapping alt or super quickly twice loses focus from current window

If I double tap alt or super in quick succession the current window
loses focus. If I do it more slowly the current window retains focus
once the dash/hud disappears.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.26-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,snap,place,imgpng,resize,gnomecompat,move,regex,animation,grid,vpswitch,mousepoll,session,expo,wall,workarounds,ezoom,fade,scale,unityshell]
Date: Mon Feb 20 15:17:36 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-01-09 (41 days ago)