I'm running Thunderbird 68.9-0, thunderbird-flatpak - 1.0 from flathub.org on Debian 10. I'm attempting to create an account for an existing GMail account. # I use the "Set up an account" Wizard and enter my account details. # The Wizard correctly identifies it as a GMail account, with all of the correct options, including OAuth2. # When I click "Done" it sends me to the Google OAuth2 login page with my GMail email address correctly filled in the "Email or phone" entry box. # When I click "Next", it sends me to the Google log in page, this time without my email address pre-filled. # When I fill in my email address and click "Next" it sends me to the previous page and the cycle repeats. Any idea of what's happening? Thanks, Diab