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[dino99 <1239818@xxxxxxxxxxxxxxxxxx>]

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** Changed in: compiz (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1239818

Title:
  Switching between windows may cause you to click on something without
  notice

Status in compiz package in Ubuntu:
  Invalid

Bug description:
  This is pretty difficult to reproduce at will, but if you accomplish
  it you can see it can be systematically reproduced, and this can
  easily happen randomly (that's how I discovered it). When it does, the
  consequences could be DISATROUS, so please don't  underestimate the
  importance of this bug.

  Open two windows of an application. I have been able to reproduce this
  in Nautilus, but I think any application with multiple windows will
  do. Let's call the two windows WA and WB.

  Make sure one of these two windows are focused

  Now click on the application's launcher icon. This will produce a
  compiz animation transforming the two windows into two reduced non-
  overlapping previews, let's call them WAp and WBp ("Window A preview"
  and "Window B preview"). If you click on, for instance, WBp, both
  windows will go back to their full size and original position, and WB
  will be focused and brought to front.

  You can repeat this several times.

  Now, in order to reproduce the bug, you need to manage to place the two windows WA and WB in such a manner that:
  - the area occupied by real window WA virtually overlaps with the area occupied by the preview WBp. Obviously you will never see them overlap, because you either see WA and WB, or WAp and WBp, but you have to place them so that the areas of screen occupied at different times by WA and WBp overlap.
  - more specifically, there must be at least one point P in the screen within the area of WBp, which corresponds to a point in WA belonging to a sensitive UI element (e.g. a button) of WA. 
  -This point P must not overlap with the area of WB

  So now:
  - click on the launcher icon so that the two previews WAp and WBp show up
  - click on point P

  => Expected result: you are clicking on WBp, so both windows should go
  back to their original size and position WA and WB, and WB should
  receive focus and brought to front, and NOTHING ELSE SHOULD HAPPEN

  => Observed result: all the described expected result happens, and
  besides that, a click at point P within WA is registered, as if WA was
  in its original position when you clicked (which it is not), and the
  click is processed. If P in the area of WA (which you are NOT seeing
  under the cursor when you click) belongs to a button that deletes
  something, then that something will be deleted without having ever
  clicked on the button.

  
  To sum it up: a click is registered and processed on an area of a window which is NOT what you see under the cursor when you perform the click, so you may perform totally unexpected actions.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.9.2-0ubuntu8.3
  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
  Date: Mon Oct 14 20:37:19 2013
  DistUpgraded: Fresh install
  DistroCodename: raring
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] Device [1025:0647]
   NVIDIA Corporation GF117M [GeForce 610M/710M / GT 620M/625M/630M/720M] [10de:1140] (rev a1) (prog-if 00 [VGA controller])
     Subsystem: Acer Incorporated [ALI] GeForce 710M [1025:0691]
  InstallationDate: Installed on 2013-10-11 (3 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
  MachineType: Acer Aspire V3-571G
  MarkForUpload: True
  PackageArchitecture: all
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-31-generic root=UUID=5830b30e-69e8-4bb4-8a2b-bc2b43c7414a ro quiet splash vt.handoff=7
  SourcePackage: compiz
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/15/2012
  dmi.bios.vendor: Acer
  dmi.bios.version: V2.07
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: VA50_HC_CR
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Acer
  dmi.chassis.version: V2.07
  dmi.modalias: dmi:bvnAcer:bvrV2.07:bd10/15/2012:svnAcer:pnAspireV3-571G:pvrV2.07:rvnAcer:rnVA50_HC_CR:rvrType2-BoardVersion:cvnAcer:ct10:cvrV2.07:
  dmi.product.name: Aspire V3-571G
  dmi.product.version: V2.07
  dmi.sys.vendor: Acer
  version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.43-0ubuntu1.1
  version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu0.1
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu0.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
  xserver.bootTime: Mon Oct 14 01:15:32 2013
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.13.3-0ubuntu6
  xserver.video_driver: intel

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