Rated 5 out of 5 stars

Doesn't work with OmniSidebar (need to be disabled and reenabled manualy)
Thanks for your work, i will come back if you fix it.
-----------------------------Edit-----------------------------
Sorry but after testing your link, and build it myself from git the problem reappears at each new window, if it can help you...

This review is for a previous version of the add-on (1.0). 

Thanks for your review.

I already had fix some restartless problems few days ago. Can you please check http://frantsev.ru/old_bookmarks_sidebar.xpi or build it from https://github.com/Shutnik/old-bookmarks-sidebar?