"show desktop" and spreading windows

After a "show desktop" shortcut (ctrl+super+D), I can't see the windows when clicking the icon in the unity sidebar with 2 or more windows minimized in it.

Steps to reproduce:
1- Open 2 nautilus windows and minimize them
2- Hit ctrl+super+d ("show desktop" shortcut)
3- Click on the nautilus folder in the unity sidebar to show the 2 folders minimized in that icon. It will perhaps only bring up only window and if you click again it will show the spread windows effect and one (or two) of the windows will be inivisible.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: compiz 1:0.9.8.6-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-25.39-generic 3.5.7.4
Uname: Linux 3.5.0-25-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
Date: Wed Mar 13 23:11:22 2013
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: CLEVO/KAPOK Computer Device [1558:5105]
 NVIDIA Corporation Device [10de:0fd4] (rev ff) (prog-if ff)
InstallationDate: Installed on 2013-01-03 (69 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: CLEVO P15xEMx
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=pt_BR:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-25-generic root=UUID=a949f697-ca40-4357-ad6c-5a39eb655457 ro quiet splash
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/09/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Not Applicable
dmi.board.name: P15xEMx
dmi.board.vendor: CLEVO
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: Not Applicable
dmi.chassis.type: 10
dmi.chassis.vendor: CLEVO
dmi.chassis.version: Not Applicable
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd03/09/2012:svnCLEVO:pnP15xEMx:pvrNotApplicable:rvnCLEVO:rnP15xEMx:rvrNotApplicable:cvnCLEVO:ct10:cvrNotApplicable:
dmi.product.name: P15xEMx
dmi.product.version: Not Applicable
dmi.sys.vendor: CLEVO
version.compiz: compiz 1:0.9.8.6-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.2-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.2-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.0-0ubuntu6.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120913.8637f772-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.9-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.2-0ubuntu3