Screen flickers when changing launcher icon size.

This bug was fixed in the package unity - 6.2.0-0ubuntu1

---------------
unity (6.2.0-0ubuntu1) quantal-proposed; urgency=low

  [ Adam Conrad ]
  * Removed debian/patches/libgeis-rename.patch

  [ Łukasz 'sil2100' Zemczak ]
  * debian/rules:
    - added override for dh_shlibdeps to point it to the private directory of
      libunity-protocol-private.so
  * debian/unity.lintian-overrides,
    debian/libunity-core-6.0-5.lintian-overrides:
    - added override to silence the binary-or-shlib-defines-rpath error, since
      we are forced to use RPATH in our case

  [ Didier Roche ]
  * New upstream release.
    - [nvidia] compiz crashed with SIGSEGV in
      nux::GraphicsEngine::QRP_GLSL_Color() from
      nux::GraphicsEngine::QRP_Color() from nux::BasePainter::PaintBackground
      (LP: #982626)
    - Launcher - when a user starts dragging a item, any folded launcher icons
      that are valid drop receptacles should unfold. (LP: #839717)
    - running applications without an icon use a blank icon (LP: #886778)
    - compiz crashed with SIGSEGV in
      unity::ui::KeyboardUtil::GetKeycodeAboveKeySymbol() (LP: #920258)
    - still some accent issues with unity/nux (LP: #950740)
    - Launcher doesn't autoscroll when holding an icon (can't reach trash)
      (LP: #987223)
    - Purchased items are not being added to the Unity launcher (LP: #925014)
    - [GLES] framebuffer output scaled incorrect in both blur and items above
      shell with multimonitor (LP: #1016789)
    - [regression] [unity 6.0] Fullscreen windows flicker and/or never redraw
      properly if panel_opacity<1.0 or dash is opened. (LP: #1024911)
    - panel and launcher blinks when using libreoffice presenter/spreadsheet
      (LP: #1024459)
    - compiz crashed with SIGSEGV in
      unity::ui::EdgeBarrierController::Impl::OnPointerBarrierEvent()
      (LP: #1020075)
    - Update to 1.6.4 (LP: #1014850)
    - [nvidia] unity crashed in nux::GraphicsEngine::QRP_GLSL_1Tex
      (glDrawArrays) (LP: #1031554)
    - Dragging image from firefox/chrome to dock causes lagg/freeze
      (LP: #772445)
    - Launcher, Dash - Showing dash, via super key, with a quicklist shown
      doesn't work (LP: #913994)
    - REGRESSION: can't type characters with accent (dead keys) (LP: #961741)
    - Launcher wrongly shows top tooltip when peforming the accordion effect
      (LP: #980942)
    - Unity Launcher Fails To Auto-Hide When Enabled & Installing Commercial
      Software (LP: #1002440)
    - logging out/in with mounted drives causes unity launcher icons to be
      duplicated (LP: #1010714)
    - Mounted volume icons doubled up in launcher (LP: #1010858)
    - Launcher - when a user starts dragging a item, the launcher icons that
      are *not* valid drop receptacles should be tinted (LP: #1020891)
    - Alt+F4 does not close the hud when Numlock or Capslock are on.
      (LP: #1022801)
    - Unity shortcut overlay needs to include shortcut for video lens
      (LP: #937334)
    - padding between last quicklist item and bottom edge is non-deterministic
      (changes randomly) (LP: #955158)
    - give a way to remove 'Show Desktop' from the Alt-Tab items
      (LP: #1014346)
    - Multi...