Users report Firefox's new update deletes bookmarks and more(old.reddit.com)
old.reddit.com
Users report Firefox's new update deletes bookmarks and more
https://old.reddit.com/r/firefox/comments/1qrnrga/firefox_just_randomly_nuked_itself/
https://old.reddit.com/r/firefox/comments/1qrnrga/firefox_just_randomly_nuked_itself/
https://www.reddit.com/r/firefox/comments/1qs62en/update_147...
this happened to me as well, got logged out from many websites.