Rated 5 out of 5 stars

Thanks so much for this addon! Default Firefox bookmark organising pattern seems so messy compared to Opera and I felt quite lost after switching to FF but this addon helped me feel like home again ;) Thank you and 5 stars for you;)
One thing tough, if I remember correctly, in Opera, opening next bookmark folder would always collapse preivous one which helped to keep the bookmark folders list short and tidy. Could be same option incorporated into your addon?

This review is for a previous version of the add-on (0.7.13.1-signed). 

Automatically close other folders

Thanks for your nice comment. :-)

The requested feature already has been implemented. :-) Just enable it in the bookmarks panel via the "Tools" button. Enable the first option called "Automatically Close Other Folders". You should select another panel like history and come back to the bookmarks to make it work.