Rated 5 out of 5 stars

It needs update to look more beautiful and native in Linux.
Also it needs an update to fix the issue with “Unsorted Bookmarks”. Clicking on it from the Bookmarks menu/button opens a window.

After all it’s great!

This review is for a previous version of the add-on (1.0.4). 

Thanks. In next version I'll generalize feature of opening Library in tab so it should work even with every new methods to open the Library.