Since Firefox Quantum rolled out, & All In One Sidebar was rendered useless, I have been longing to have Bookmarks AND vertical "Tree Style" tabs open simultaneously. This add-on lets me do this, so thank you.

I use the Firefox sidebar to show bookmarks, & this add-on to show open Tabs.
However, the text is too big & bold, & not in keeping with the Firefox text, which is distracting & mildly annoying, & it would be great if you could include an option to make ithe text smaller, or even change the font size & style
Also, the sidebar flickers briefly whenever you switch tabs, which again is distracting & rather irritating.

I appreciate your efforts in creating this tab, and If you could address / include these issues then I would happily rate this 5 stars.

Note: Review updated to 4 stars, because of option to to change text Syle font/ size. Thanks Dev