bottom of the screen is cut out in some windows

[Mr. Morfoos]

In some windows, bottom of the screen in simply cut out when starting in maximized mode. I first noticed it with package "gnome subtitles" and I thought it's a bug in gnome subtitles. But then, I opened ubuntu help from the desktop and the same thing happened.

Steps to reproduce:

1. Open ubuntu help from global app menu
2. Maximize ubuntu help and then close it
3. Open ubuntu help again (now it starts in maximized mode) and take a look at the bottom of the screen.

Using Precise

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.18.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-27.46~precise1-generic 3.5.7.7
Uname: Linux 3.5.0-27-generic i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86 Kernel Module 304.88 Wed Mar 27 14:31:12 PDT 2013
 GCC version: gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu17.2
Architecture: i386
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CompositorRunning: compiz
Date: Sun Apr 28 00:16:14 2013
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 nvidia-173-updates, 173.14.36, 3.5.0-23-generic, i686: installed
 nvidia-173-updates, 173.14.36, 3.5.0-27-generic, i686: installed
 nvidia-current, 304.88, 3.5.0-27-generic, i686: installed
GraphicsCard:
 NVIDIA Corporation G73 [GeForce Go 7600] [10de:0398] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Toshiba America Info Systems Device [1179:ff01]
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release i386 (20130214)
MachineType: TOSHIBA Satellite P200
MarkForUpload: True
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.5.0-27-generic root=/dev/mapper/hostname-root ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
XorgConf:
 Section "Device"
  Identifier "Default Device"
  Option "NoLogo" "True"
 EndSection
dmi.bios.date: 08/21/2007
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.70
dmi.board.name: ISRAE
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV1.70:bd08/21/2007:svnTOSHIBA:pnSatelliteP200:pvrPSPBGE-002011G3:rvnTOSHIBA:rnISRAE:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite P200
dmi.product.version: PSPBGE-002011G3
dmi.sys.vendor: TOSHIBA
version.compiz: compiz 1:0.9.7.12-0ubuntu1
version.libdrm2: libdrm2 2.4.39-0ubuntu0.2
version.libgl1-mesa-dri: libgl1-mesa-dri N/A
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core N/A
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A
version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A