Window content disappears and can't be shown again when a window is shaded

[Alexander]

Double clicking the window bar makes window content "crash" / disappear and it's almost impossible to restore the window aftewards. This is always reproducable on 14.04, tested on two different computers with both Ati and Nvidia cards with open drivers.

1) Open any app, terminal for example: http://i.imgur.com/NQ8ubk0.png
2) Double click the window decoration
3) Boom, the app is dead: http://i.imgur.com/ohCmk0S.png

More example shots:
http://i.imgur.com/MJld1DV.png ->
http://i.imgur.com/fYQ9DEg.png

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.2.0+14.04.20140423-0ubuntu1.2
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.14.1-0ubuntu3.1
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sat May 24 09:21:20 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.3.10, 3.13.0-24-generic, x86_64: installed
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] Barts XT [Radeon HD 6870] [1002:6738] (prog-if 00 [VGA controller])
   Subsystem: Hightech Information System Ltd. Device [1787:2305]
InstallationDate: Installed on 2014-04-18 (36 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic root=UUID=ae516432-a41a-47d1-a3fe-0d6224e64909 ro quiet splash radeon.dpm=1
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/24/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1005
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A87TD/USB3
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1005:bd08/24/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A87TD/USB3:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
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 10.1.0-4ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu5
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 May 24 09:00:35 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input USB Keyboard KEYBOARD, id 8
 input USB Keyboard KEYBOARD, id 9
 input Kingsis Peripherals ZOWIE Gaming mouse MOUSE, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2
xserver.video_driver: radeon

[Alexander (alexander-)]

Bump!

[Marco Trevisan (Treviño) (3v1n0)]

The setting

  gsettings get org.gnome.desktop.wm.preferences action-double-click-titlebar

Is set to shade the window, right?
As it seems we've some troubles when a window is shaded...

[Alexander (alexander-)]

It says 'toggle-shade', so yes I guess so.

I investigated this a bit - it looks like Unity tweak tool (which is completely necessary app with Unity due lack of proper options) sets every action in titlebar to toggle shader when you press 'Restore defaults', which is likely the reason why this happened to my installations.

Nonetheless, doesn't seem to be Unity bug, guess this should be assigned for the tweak tool devs.