Public bug reported:

When I alt-tab between windows, occasionally (maybe 1 out of 10 or 15
times) when I finish, the window is left in a state where it has no
keyboard focus, and the title bar is blank.  It still appears to have
mouse focus (hovering over an element which changes the pointer works,
for example), and when I click into the window, keyboard focus is
restored.  This also appears to happen (again, occasionally) when
pressing alt to get to the HUD, then alt again to dismiss it.

This only started happening recently, and may be a regression from a
unity/compiz update.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.14.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Mon Aug 20 17:31:42 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 
(20120425)
ProcEnviron:
 TERM=xterm
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug precise running-unity

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https://bugs.launchpad.net/bugs/1039291

Title:
  No keyboard focus after alt-tab, title bar blank

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