middle mouse button on window title bar does not push the window to the background

[Chris]

It seems that unlike any previous Ubuntu version the following feature will not work on Trusty Tahr:
When you use the middle mouse button (usually the scroll wheel) on a window's title bar it used to be put in the background, revealing the windows that where right below it. This seems to be gone. Right now the middle click has no useful function on my install. I can only guess this might be connected locally integrated menus which have been introduced this cycle, so I'm opening this against Unity - hope thats correct. In any case I'm not using locally integrated menus but the default global menus.

I'd really hope to see this function return as it is an efficient and easy windows management feature.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity 7.1.2+14.04.20140328.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-20.42-generic 3.13.7
Uname: Linux 3.13.0-20-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CurrentDesktop: Unity
Date: Mon Mar 31 19:12:00 2014
InstallationDate: Installed on 2014-02-15 (44 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140214)
ProcEnviron:
 LANGUAGE=de_DE
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.