Unity windows overview mode garbled

[DonnieD]

Unity windows overview mode has not nice corners and launcher bar. See picture.
Same With Unity 5.10.0 and with 5.12.0
btw i was unable to take screenshot with hotkeys just in overview mode, have to use delayed screenshot.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.12-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Wed May 2 13:20:29 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report, could you add your .xsesison-errors to the bug? It seems from the screenshot that you use unity-2d and not 3d

[DonnieD (donnied)]

Yeah its 2D.
Here are xsession-errors

[DonnieD (donnied)]

Btw this is switchable graphics cards system, whats why I can't use 3D :[

[Sebastien Bacher (seb128)]

reassigning to unity2d

[DonnieD (donnied)]

Now I'm able to use 3D. Problem was related with bug #987949