Windows buttons not displayed for LibreOffice apps when window is maximized

[Jean-Baptiste Lallement]

For LibreOffice apps, sometimes, windows buttons (max/min/iconify) are not displayed in the menubar when the application window is maximized.
Buttons are there when the window is not maximized.

Not reproducible 100%

The screenshot attached shows the top left corner of a maximized LibreOffice Calc window without windows buttons (top menubar has no button and menu is displayed below it)

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: unity 4.22.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.19-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
.tmp.unity.support.test.0:

ApportVersion: 1.23-0ubuntu2
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
Date: Wed Oct 5 10:59:13 2011
DistUpgraded: Log time: 2009-11-14 16:29:16.249784
DistroCodename: oneiric
DistroVariant: ubuntu
DkmsStatus:
 virtualbox, 4.1.2, 3.0.0-10-generic, i686: installed
 virtualbox, 4.1.2, 3.0.0-11-generic, i686: installed
 virtualbox, 4.1.2, 3.0.0-12-generic, i686: installed
 virtualbox, 4.1.2, 3.0.0-9-generic, i686: installed
EcryptfsInUse: Yes
GraphicsCard:
 Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) [8086:2a02] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:14e2]
   Subsystem: ASUSTeK Computer Inc. Device [1043:14e2]
MachineType: ASUSTeK Computer Inc. U3SG
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.utf8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=75f23f17-3ace-4485-af57-a7318eb6c2ff ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: Upgraded to oneiric on 2011-07-12 (84 days ago)
dmi.bios.date: 01/28/2008
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 305
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: U3SG
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr305:bd01/28/2008:svnASUSTeKComputerInc.:pnU3SG:pvr1.0:rvnASUSTeKComputerInc.:rnU3SG:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: U3SG
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu3
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[Launchpad Janitor (janitor)]

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

[Omer Akram (om26er)]

Thanks for the bug report. This particular bug has already been reported and is a duplicate of bug 842566, so is being marked as such. Any further discussion regarding the bug should occur in the other report. Feel free to report any other bugs you may find.