Rated 4 out of 5 stars

Addon works as advertised but could still be improved.

- Option to choose whether it hides all but the tabs (current configuration), or hide all but the tabs and the bookmarks toolbar or alternatively/also any other toolbar.

- Fix the Firefox window borders to stop revealing the toolbars. Only trigger depending on if the above selected option is touched. (Tab bar, Bookmark toolbar or Navigation toolbar.)

- Option for user-defined time to be displayed before hiding.

This review is for a previous version of the add-on (4).