icons on the left and the top disappear, but actions still work if you move the mouse to where the icons used to me.

[jcdutton]

This is on Precise
The unity icons on the left and top of the screen have disappeared.
If I move a mouse over where an icon used to me, I can click on it, and the correct action happens.
For example, move to the top right and click the mouse, the shutdown/logout menu appears.
Same for the large icons down the left hand side.

This happened after watching a video, but it does not seem to be easily reproduced.
When the problem occurs, there is no segfault or anything new in /var/crash.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.8.0-0ubuntu2
Uname: Linux 3.3.0 x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Sat Apr 14 21:51:52 2012
DistUpgraded: 2012-03-21 22:11:57,105 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RS690M [Radeon X1200 Series] [1002:791f] (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:01fc]
MachineType: Dell Inc. Inspiron 1521
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.3.0 root=/dev/mapper/inspiron--hd-root ro
SourcePackage: unity
UpgradeStatus: Upgraded to precise on 2012-03-21 (23 days ago)
dmi.bios.date: 02/03/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0GU163
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd02/03/2008:svnDellInc.:pnInspiron1521:pvr:rvnDellInc.:rn0GU163:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Inspiron 1521
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.6-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[jcdutton (james-superbug)]

Steps to reproduce. Problem only happens on unity-2d, not unity (the 3d version).

Install xine-ui
run "xine" from the command line
Press h
Press q
Icons disappear

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alan Pope 🍺🐧🐱 🦄 (popey)]

Reproduced this with xine and unity 2d.

Window manager warning: Received a NET_CURRENT_DESKTOP message from a broken (outdated) client who sent a 0 timestamp
Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x36003cf (xine: xine)
Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
Window manager warning: unity-2d-shellReceived a NET_CURRENT_DESKTOP message from a broken (outdated) client who sent a 0 timestamp
: [WARNING] Wnck: Received a timestamp of 0; window activation may not function properly.

Window manager warning: Buggy client sent a _NET_ACTIVE_WINDOW message with a timestamp of 0 for 0x36003cf (xine: xine)
Window manager warning: meta_window_activate called by a pager with a 0 timestamp; the pager needs to be fixed.
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.application' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.application' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application1376633681")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.application' on object at path /org/ayatana/bamf/application756416830")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application756416830")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application756416830")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf.view' on object at path /org/ayatana/bamf/application756416830")
unity-2d-shell: [WARNING] QDBusError("org.freedesktop.DBus.Error.UnknownMethod", "No such interface `org.ayatana.bamf...