Great idea, but you have to work on that. Used Alice's 'Show Parent Folder' and looking for a substitute. Initial window is to small, when expanding, lower part disappears. Changing size to fixed size is bad anyway, should be modifiable by mouse. This would be first step, but probably some more work to do (read about problem with large bookmark tree: This is what I have). One point for acutal usability, a second one for motivation :-)

I like the add-on when I can see it. Entire view appears black when scrolling over with mouse. This makes it unusable.

unusable

Hopeless! When scrolling down bookmarks appear on top of each other, making it unreadable. Deleted straight away.

The concept is wonderful. The execution is horrid. It is very slow with large bookmark trees. Scrolling turns the list black and unreadable.

It's simply unusable in its current state.

Se ve bien. tiene buenos principios pero al hacer click en la estrella se tarda mucho en responder. Ojalá mejoren eso.
Saludos. siguan así.

You have fallen under the spell that so many programmers/designers have fallen under. Everyday needs change; better; more "see what I can do". In the process users end up going back FIVE steps to return to WHAT WORKED FINE!
Upgrading to v57 caused a loss of the "parent" column add-on (which wasn't all that great), loss of ALL bookmarks and pass codes, and loss of bookmarks on the home page display.
The Malthusian Trap is alive and well at Firefox.
Daniel LaPlante,
Totally Disillusioned User

Scrolling makes window turn black, size changes don't work

При открытии двух папок закладок, прокручивая вниз текст накладывается на текст.

Don't like having to search for my bookmarks. I liked when you hit bookmarks they just came up.

Very, very, very slow!
Not find for a folder name

Not working in nightly, forever stays in the spinner...