Doubleclick to open new tab doesn't seem to be working anymore? Rated 5 out of 5 stars

Love this Add-On! However, after the last firefoxupdate the feature to double-click on an empty space to open a new tab doesn't seem to be working anymore?

This review is for a previous version of the add-on (0.14.2014051101). 

You need to install another addon to do it. See the FAQ: http://piro.sakura.ne.jp/latest/blosxom/mozilla/extension/treestyletab/2014-05-06_double-click-on-tab-bar.htm#topic2014-05-06_double-click-on-tab-bar