Pressing Super doesn't reveal Dash when watching a video fullscreen

[Thibaut Brandscheid]

Latest 64-Bit precise.
Two monitors, launcher placement is set to only-main-monitor with activated auto-hide.

What you expected to happen:
When watching a video fullscreen on the main monitor and browsing the web in the other I expect to be able to open the Dash by pressing the Super button or by pushing the mouse to the left edge of the screen.

What happened instead:
Pressing Super or pushing the mouse against the screen edge doesn't reveal the Launcher nor the Dash.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 6.12.0daily13.04.01-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
Uname: Linux 3.8.0-16-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.9.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDmesg:
 [ 6.039936] r8169 0000:03:00.0 eth0: link up
 [ 6.039943] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
 [ 18.951821] systemd-logind[2440]: New seat seat0.
 [ 18.951889] systemd-logind[2440]: Failed to save seat data for seat0: No such file or directory
Date: Thu Apr 4 00:38:59 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.2.10, 3.8.0-15-generic, x86_64: installed
 virtualbox, 4.2.10, 3.8.0-16-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Juniper [Radeon HD 5700 Series] [1002:68b8] (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited Device [174b:e147]
InstallationDate: Installed on 2013-03-02 (32 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130301)
MachineType: Gigabyte Technology Co., Ltd. P55A-UD3
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-16-generic root=UUID=75bce730-90cb-497c-bcc2-a811c07aae8a ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/10/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F11
dmi.board.name: P55A-UD3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF11:bd08/10/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55A-UD3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55A-UD3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P55A-UD3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.9~daily13.03.29-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0.3-0ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0.3-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.5-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Wed Apr 3 23:13:04 2013
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Logitech Logitech USB Headset KEYBOARD, id 8
 input Logitech USB-PS/2 Optical Mouse MOUSE, id 9
 input AT Translated Set 2 keyboard KEYBOARD, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu4
xserver.video_driver: radeon