Been using this add-on since its inception last year, very useful as I've been a heavy user of the old (and incompatible since 2017) ABH2 extension for 10 years.

My only wish since I began using Bookmark Tab Here was to be able to add a page from the bookmark sidebar... which is now possible since FF 66! 🤘🏽
The 1.0 version is pretty mature and incredibly useful, with an identifiable icon and the new sidebar bookmark feature. Awesome work, thank you!