Window snap appears even when no window is dragged to the sides

[Barneedhar]

Steps to reproduce:
1. Open a window.
2. Full screen it.
3. Go to workspace spread (win+E or win+S).
4. Go back to the workspace that you came from.
5. Move your mouse cursor to any of the sides. You can see the orange highlighting as if the window is being snapped to the side.

This bug is probably the same as bug #875557.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.0.0-0ubuntu5+webapps1 [origin: LP-PPA-webapps-preview]
ProcVersionSignature: Ubuntu 3.5.0-6.6-generic 3.5.0
Uname: Linux 3.5.0-6-generic x86_64
ApportVersion: 2.4-0ubuntu6
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
CrashDB: unity
Date: Wed Aug 1 23:40:34 2012
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
SourcePackage: unity
UpgradeStatus: Upgraded to quantal on 2012-07-10 (22 days ago)

[Bilal Akhtar (bilalakhtar)]

Merging into bug #875557.