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[Bug 1335582] [NEW] Scrolling in one desktop "touches" apps in another desktop

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Public bug reported:

I've found a bug in how unity/compiz handles multiple desktops. Here are
the steps to reproduce it.

1) Setup four virtual desktops in a 2x2 configuration
2) On the top-left desktop setup a terminal window maximized to the left side (by dragging it to the left edge so it uses the left half of the screen)
3) On the top-right desktop open up firefox and maximize it
4) Navigate to a page that needs scrolling
5) Try to scroll by moving the scrollbar on the right of the screen

What happens is that the mouse pointer gets grabbed by the resize target
of the terminal window on the top-left screen.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.1+14.04.20140513-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
Uname: Linux 3.13.0-30-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sun Jun 29 09:52:53 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21fa]
InstallationDate: Installed on 2014-05-03 (56 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 23252QG
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-30-generic root=UUID=9018e190-86bb-4fbf-a348-d47ea769640f ro quiet splash vt.handoff=7
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/24/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET31WW (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 23252QG
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:bvrG2ET31WW(1.11):bd05/24/2012:svnLENOVO:pn23252QG:pvrThinkPadX230:rvnLENOVO:rn23252QG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 23252QG
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sat Jun 28 00:18:03 2014
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                 728 
 vendor                                     LGD
xserver.version: 2:1.15.1-0ubuntu2

** Affects: unity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 third-party-packages trusty ubuntu

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https://bugs.launchpad.net/bugs/1335582

Title:
  Scrolling in one desktop "touches" apps in another desktop

Status in “unity” package in Ubuntu:
  New

Bug description:
  I've found a bug in how unity/compiz handles multiple desktops. Here
  are the steps to reproduce it.

  1) Setup four virtual desktops in a 2x2 configuration
  2) On the top-left desktop setup a terminal window maximized to the left side (by dragging it to the left edge so it uses the left half of the screen)
  3) On the top-right desktop open up firefox and maximize it
  4) Navigate to a page that needs scrolling
  5) Try to scroll by moving the scrollbar on the right of the screen

  What happens is that the mouse pointer gets grabbed by the resize
  target of the terminal window on the top-left screen.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: unity 7.2.1+14.04.20140513-0ubuntu2
  ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2
  Uname: Linux 3.13.0-30-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Sun Jun 29 09:52:53 2014
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Lenovo Device [17aa:21fa]
  InstallationDate: Installed on 2014-05-03 (56 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 23252QG
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-30-generic root=UUID=9018e190-86bb-4fbf-a348-d47ea769640f ro quiet splash vt.handoff=7
  SourcePackage: unity
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/24/2012
  dmi.bios.vendor: LENOVO
  dmi.bios.version: G2ET31WW (1.11 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 23252QG
  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:bvrG2ET31WW(1.11):bd05/24/2012:svnLENOVO:pn23252QG:pvrThinkPadX230:rvnLENOVO:rn23252QG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 23252QG
  dmi.product.version: ThinkPad X230
  dmi.sys.vendor: LENOVO
  version.compiz: compiz 1:0.9.11+14.04.20140423-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.52-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Sat Jun 28 00:18:03 2014
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                                 728 
   vendor                                     LGD
  xserver.version: 2:1.15.1-0ubuntu2

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