I've successfully added most of my gmail accounts into the Thunderbird account manager window. But one gmail account in particular keeps failing to add. Whenever I try to add it I get as far as the popup with a gmail login, where I would normally log in and tell google to authorize Thunderbird to access the account. But when I enter my email address on that popup and click the "Next" button, instead of asking me for my password it just clears the field and keeps showing the log in page, asking for my email or phone number. (See screenshot) If I type in the email address again and hit next again, the same thing happens. It always just resets instead of moving on to the password input. (But to reiterate, I have successfully added about a half dozen other gmail accounts and haven't encountered this problem with any of the others.) At first I thought this might have been because it was a new gmail account I had just created, so I figured I'd just try again later. But I created the account at least 3 days ago now, and Thunderbird is still doing the same thing for that login page. Any suggestions? Or is this a known bug?