Switching the workspace don't works with two windows of the same type

[Robin]

Steps to reproduce:

Open an application. (For example an Terminal)
Open a new window of the same type. (Right click on the icon of the opened program – Terminal – and then "New Terminal")
Hide one of the opened windows.
Choose one of the two windows and select "Move to workspace 2". (Or 3,…)
Then try to show one of the windows, usually by clicking on the icon in the dash.

Result:

Quickly you'll see that nothing will happen.

Expected result:

There are some ways to deal with that problem: You can directly show the windows which was used at last.
Or you can ask the user which one he would see in the fourground, by showing both windows at the same time, so the user has the choice between the both.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: unity 6.6.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-15.22-generic 3.5.4
Uname: Linux 3.5.0-15-generic i686
ApportVersion: 2.5.2-0ubuntu4
Architecture: i386
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Tue Sep 25 18:45:38 2012
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha i386 (20120905.2)
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Omer Akram (om26er)]

confirmed what the user reporter but, if you click on any other running application/desktop and the click on the terminal icon again. everything is fine.