Third time I've used this add-on and yet again it has deleted months of multiple saved sessions.

How can this add-on be listed as "Recommended" by Mozilla when it is fatally destructive to users workflows because it is so unstable? It should be removed entirely until the creators fix this glaring failure.

I have saved hundreds of bookmarks in Firefox for over 10 years and they haven't randomly disappear, so why can't OneTab write an add-on fit for purpose?