Minimized windows don't restore, or restore as blank

I do have this problem in both Precise and Quantal

This bug was fixed in the package unity - 6.12.0daily13.01.11.2-0ubuntu1

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unity (6.12.0daily13.01.11.2-0ubuntu1) raring; urgency=low

  [ Didier Roche ]
  * debian/control:
    - bump some missed build-deps
    - bump compiz and nux build-deps for the API and ABI breakages
      (LP: #1095981)
  * debian/rules:
    - disable pch for now as it's not working with -g -02 (LP: #1095978)

  [ Brandon Schaefer ]
  * Ported Compiz to 0.9.9
  * debian/control:
    - bump the build-deps
  * Dash and HUD do not have X event focus, causing XIM to not work.
    (LP: #1086988)
  * Windows losing focus after the start/restart of Unity (LP: #1097368)

  [ Łukasz 'sil2100' Zemczak ]
  * Dash - Update Dash nav bar icons (LP: #1089373)
  * Autopilot tests failing in the test_hud suite due to locale
    dependency (LP: #1076531)
  * Super key not registered if held too long (LP: #1097189)
  * Unity HUD uses wrong icon when switching from the Dash to HUD (LP:
    #1089482)

  [ Marco Trevisan (Treviño) ]
  * Using bleeding edge Mesa drivers causes GL_INVALID_OPERATION error
    in glDrawBuffer / glReadBuffer (LP: #1092550)
  * [Regression] Window buttons / Title doesn't redraw correctly on
    windows with no menus (LP: #1090439)

  [ Nick Dedekind ]
  * Dash - When the Dash preview is open, the ghost images should run
    all the way to the top of the screen as shown in the design (LP:
    #1060948)
  * Dash - When the Dash preview opens, the category headers should be
    expanded and the filters should hide (LP: #1060937)
  * Dash - In the Dash preview, when a user moves to the next or
    previous preview the highlighted ghost image should change (LP:
    #1060941)
  * Dash - As soon as a user starts dragging a .png file from the Dash,
    the file icon changes size (LP: #863412)

  [ Gord Allott <email address hidden>, Łukasz 'sil2100' Zemczak <email address hidden>, Didier Roche ]
  * "unitydashlegalseen" Causing back-up error (LP: #1066646)
  * unity dash should show legal disclaimer (LP: #1065652)

  [ Manuel de la Pena ]
  * StaticCairoText makes NUX get into an infinte loop (LP: #1071327)

  [ Daniel van Vugt ]
  * Minimized windows don't restore, or restore as blank (LP: #1089779)

  [ Andrea Azzarone ]
  * TestOverlayScrollBar.TestScrollDownSignal segfaults (LP: #1089888)
  * Dash - Update Dash Launcher icon tooltip to say "Search your
    computer and online sources" (LP: #1090325)
  * TestLauncherController.GetLastIconPriorityUnStickyWithNoIconsAndUri
    segfaults (LP: #1089894)
  * TestDashController.TestShowAndHideDash fails (LP: #1089904)
  * [Regression] Tapping super key shows shortcuts overlay. (LP:
    #1090388)
  * [Regression] Unity fails to restore initially minimized windows.
    (LP: #1097686)
  * launcher does not show minimized update manager while clicked (LP:
    #1003950)
  * Dash - Update Dash Home search box hint message to say "Search your
    computer and online sources" (LP: #1090327)
  * can't quit a minimized application (LP: #1086366)
  * Unity daily-build (07.01.13) empty space between launcher and dash
    in non default launcher size (LP: #1097184)

  [ Sam Spilsbury ]
  * Fonts get chang...

Fix Released in Unity Unity 7.0.0 "R series".