I enabled the option "Taskbar Button Middle-Click Behaviour" and it works on the DisplayFusion taskbar, but not on the Windows 7 taskbar/superbar (middle-click still opens a new instance of the program). Is it supposed to work on the win7 taskbar too?

If not, would it be possible to add this option? I think MS should have made this default, since I find myself closing applications more often than opening additional instances. It's also the "normal" middle-click function in most every program that has tabs. (and yeah I know you can middle-click the preview pane to close it, that's what I do currently )