How do I bring back the "Lower" option when middle clicking on the title bar in Ubuntu 15.04?

Solution 1:

Okay awesome I figured it out for anyone else. Running this command updates the value and fixes it:

dconf write /org/gnome/desktop/wm/preferences/action-middle-click-titlebar "'lower'"

This works with ubuntu 15.04 :

unity-tweak-tool  
-> Window Manager 
-> General 
-> Additional 
-> Titlebar Action -> Middle click 
->  from list choose :  Lower

There is an option for this in the Unity Tweak Tool.

sudo apt-get install unity-tweak-tool

You can find the option in the Window-Manager section.