dragging windows too fast will cause mouse fall out of window title bar

[PSWZ-ZhangY]

dragging window (especially when to the top to triger maxmize action) will cause the pointer go out of the window title bar.
I ve made a screen record of the bug . It may be more vivid than my description~

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: compiz 1:0.9.7.6-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
Uname: Linux 3.2.0-23-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
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: Sat Apr 28 16:00:41 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 fglrx, 8.960, 3.2.0-23-generic, x86_64: installed
 fglrx, 8.960, 3.2.0-24-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Madison [Mobility Radeon HD 5000 Series] [1002:68c0] (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:3927]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
JockeyStatus:
 xorg:fglrx_updates - ATI/AMD 私有 FGLRX 图形驱动程序(发行后更新) (专有软件, 已禁用, 未使用)
 xorg:fglrx - ATI/AMD 专有的 FGLRX 图形驱动 (专有软件, 已启用, 使用中)
MachineType: LENOVO IdeaPad Y560
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=zh_CN:zh
 TERM=xterm
 PATH=(custom, no user)
 LANG=zh_CN.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-23-generic root=UUID=3e71163e-1901-41f3-ad0b-e8d14cff8903 ro quiet splash vt.handoff=7
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/29/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 30CN54WW
dmi.board.name: KL3
dmi.board.vendor: Lenovo
dmi.board.version: Rev 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Lenovo
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr30CN54WW:bd04/29/2010:svnLENOVO:pnIdeaPadY560:pvrRev1.0:rvnLenovo:rnKL3:rvrRev1.0:cvnLenovo:ct10:cvrRev1.0:
dmi.product.name: IdeaPad Y560
dmi.product.version: Rev 1.0
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.7.6-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
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

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 886192, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.