We ask them for their email and send them a reset link.
They follow the reset link and are taken to the Password Reset page in Auth0.
They enter the new password and confirm it.
Auth0 monitoring shows that password reset was successful for the user.
The user attempts to log in with the same password.
Notes: The above problem occasionally occurs, I found detailed logs of two successful password resets in User management → Users → History in the auth0 dashboard. After one success, I could log in with the new password, and after another success, I could not log in with the new password. It can be seen that the log request bodies of the two times are different.
Since you have opened a support ticket regarding the matter, I would recommend continuing the discussion with the assigned representative in order to troubleshoot the issue, of course, if I have findings of my own, I will sync with them and post any necessary updates here as wel.