I like the idea of this extension but as you can see it's not really working right now : https://i.imgur.com/30JNiuT.png

Required add-on but needs further work
1) Clicking on the "bookmark manager" button results in an error - "Illegal URL: chrome://bookmarks/"
2) The search is not working well, there are a lot of links in the results that do not contain a search string in either Title or Address.
Perhaps you should do a search by Title and by Address separately.
Those. make a search option with a choice - either by title or/and by Address

Not working on Android…

Awful can't sign in can't import bookmarks but password works on my pc

It Works! But UI can be improved!
ex. use dedicate bookmark/folder icon when icon can't be retrieved

Just getting used to this Android stuff at 70.

Non lavora

not working, nothing happens...

it indeed elegant and fuzzy, but it's slow, too slow in fact.

Firefox built in Bookmark Menu is far better, it's a button too that you can put at the toolbar.

I don't see a workaround for "Open Enclosing Folder" in this addon ?!
Search takes very long compared to internal bookmark manager and renders FF unusable for minutes (5000+ bookmarks, FF 55 with disabled e10s)

After I killed the FF process, the button was gone. Not even shown in "configure UI" menu. It helps to disable and reenable the addon.

Noooo... To get icons, It refreshes all my bookmarks with bookmarks as login on some online services so now all these accounts have updated last seen time...
Future of FF with Webextensions isn't clear if addons do what they want and can't be controlled by user not vice-versa...

So addon is helpful to locate a bookmark folder, to find folder that contains an specific bookmark

When I click addon button it opens a small, compact window of it's own, how to make that open in a tab instead?

If you an extension "Manager", it should be able to do many things. THIS extension has pretty limited functionality. Without such basic functionality as import/export of bookmarks it is NOT a manager.
Name your extension properly. Then nobody will expect much from it and you may get more stars.

A workaround to Firefox bug "Add "Open Enclosing Folder" context menu to search results of bookmarks in the Library window (link to view/open containing folder, parent folder button) " - https://bugzilla.mozilla.org/show_bug.cgi?id=469441

Didn't work for me on Firefox 55.0.3 (32-bit) and I can't see how it does. One star is actually no star.

Not working on Android, waste of time