Can't create new tab by middle-clicking folder in navigation pane (Vista-64bit)

Can't create new tab by middle-clicking folder in navigation pane (Vista-64bit)

Anonymous (192.168.1.x) 1213954128|%e %b %Y, %H:%M %Z|agohover

First off - this is an excellent add-on to Windows. It's great to finally work with tabs in explorer after being so used to Firefox's tabs for years now. Thanks!

I've only just installed and am familiarising myself with the settings/functionality etc.

I am unable to create a new tab by middle-clicking a folder in the navigation pane (folder list) on the left hand side of Windows Explorer. Nothing happens at all when I middle click folders here.

Is this a bug or functionality which is yet to be added?

Everything else seems to work fine so far.

Cheers

S