Highlighting menus with mouse cursor not recognized

[Sam_]

Since latest updates highlighting menus with mouse cursor isn't recognized, but keyboard cursor is.
Test any menu, system-settings, indicator-datetime, -weather, firefox appmenu, nautilus context menus.
Entries aren't highlighted when using mouse cursor, but using keyboard cursor. (video)
(Context)-menus within firefox itself are functional.

## The described issue doesn't occur on pc having the same updates.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-18.28-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 1.94.1-0ubuntu1
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,imgpng,obs,gnomecompat,snap,screenshot,regex,grid,workarounds,resize,move,expo,place,mousepoll,ezoom,session,winrules,wall,fade,scale,unityshell]
Date: Wed Mar 7 18:52:20 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
ProcEnviron:
 TERM=xterm
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Omer Akram (om26er)]

duplicate bug 949414