Most Excellent!! Rated 5 out of 5 stars
It turns out that my problem was an interaction with a theme. With the default theme this extension works perfectly.
Thanks for the addition to Firefox. You have taken a problem in Firefox and fixed it.
Rated 2 out of 5 stars
I wish I could email you directly. The pane that won't resize for me is the pane directly above the New Folder button.This review is for a previous version of the add-on (18.104.22.168-signed).
Almost There Rated 2 out of 5 stars
This extension lacks an enlarged folder tree pane. I recommend that the author look at the code for OpenBook to see an example of an expandable tree pane within the bookmark panel window. I am still using OpenBook 2.0.1 - I simply update the install.rdf file.
Author, please make the change to an expandable pane so I can give this extension the five stars it will then deserve. Thank you for stepping in to fill a gap that the Mozilla developers have left untouched, even though the Bugzilla entry is years old.
Keep up the good work!
Grab the resizer at bottom left corner to resize tree
I really do not understand what you meant by "enlarged folder tree pane". If you drag the resizer grip (see first screen shot) that appears at the bottom left corner of the bookmark popup, you can re-size the popup and it will make tree expand.