window decoration not available when 2 windows are maximized side by side

[Simon Déziel]

When openening 2 LibreOffice Writter documents side by side and maximizing them to use all the screen the window decorations are no longer visible when moving the mouse over the title bar.

Each window was initially move to one half of the screen using "Ctrl+Win+left arrow" and "Ctrl+Win+right arrow" then maximized with their corresponding title bar icon. See the attached screenshot to have a clear picture. The sceenshot shows the missing decorations.

I'm not sure if this affects compiz so please re-assign if needed.

Relevant info:
$ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04
$ apt-cache policy compiz unity xserver-xorg-video-intel
compiz:
  Installed: 1:0.9.7.12-0ubuntu1
  Candidate: 1:0.9.7.12-0ubuntu1
  Version table:
 *** 1:0.9.7.12-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:0.9.7.6-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
unity:
  Installed: 5.18.0-0ubuntu2
  Candidate: 5.18.0-0ubuntu2
  Version table:
 *** 5.18.0-0ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     5.10.0-0ubuntu6 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
xserver-xorg-video-intel:
  Installed: 2:2.17.0-1ubuntu4.3
  Candidate: 2:2.17.0-1ubuntu4.3
  Version table:
 *** 2:2.17.0-1ubuntu4.3 0
        500 http://archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     2:2.17.0-1ubuntu4 0
        500 http://archive.ubuntu.com/ubuntu/ precise/main amd64 Packages

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: compiz 1:0.9.7.12-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-23.35~precise1-generic 3.5.7.2
Uname: Linux 3.5.0-23-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,regex,resize,gnomecompat,scale,grid,workarounds,move,imgpng,expo,unitymtgrabhandles,place,mousepoll,wall,vpswitch,session,ezoom,unityshell]
CompositorRunning: compiz
Date: Fri Feb 15 17:01:13 2013
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation Core Processor Integrated Graphics Controller [8086:0046] (rev 02) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:215a]
MachineType: LENOVO 2516CTO
MarkForUpload: True
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_CA:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_CA.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-23-generic root=/dev/mapper/crypt-root ro quiet splash i915.i915_enable_fbc=1 i915.lvds_downclock=1 drm.vblankoffdelay=1 possible_cpus=4 vt.handoff=7
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/26/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: 6IET84WW (1.44 )
dmi.board.name: 2516CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6IET84WW(1.44):bd09/26/2012:svnLENOVO:pn2516CTO:pvrThinkPadT410:rvnLENOVO:rn2516CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2516CTO
dmi.product.version: ThinkPad T410
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.12-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.39-0ubuntu0.1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.3
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.11
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
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 2:2.17.0-1ubuntu4.3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Launchpad Janitor (janitor)]

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