Aposto que isso é um problema com a versão do Thunderbird. Dê uma olhada nestes relatórios de bugs no Ubuntu launchpad e no Mozilla:
I'm trying to login in my gmail account.
After entering email and password I have a Google page with enter point.
But when I press the Continue button - nothing happens.
Screen in attachment.
Test case:
Open Thunderbird and try to login in Gmail account with 2-auth.
1) Ubuntu 16.04.1 LTS x86_64
2) 1:45.8.0+build1-0ubuntu0.16.04.1
3) Continue authorization in Gmail
4) Pressing the continue button have no effect
- O Thunderbird 45.8.0 trava na nova janela de senha do Gmail
Steps to reproduce:
Tried to create a new profile with a gmail account in ThB 45.8.0
Actual results:
GMail's Auth page appears, pre-filled with my email address, but clicking on "Next" button has no effect, so the password cannnot be verified, thus the account cannot be created. My problem is exactly the one described here : https://forums.linuxmint.com/viewtopic.php?f=47&t=244609&p=1314125#p1314125 NOTE: my config already says that OAuth2 is selected...
Expected results:
GMail Auth window should work or an alternative way of configuring/verifying the account should be proposed
Ambos os relatórios de bug se referem exatamente à versão 45.8.0 do Thunderbird. Tente uma versão mais recente (como 54) e veja se isso ainda acontece.