I have switched on New Universal Login and switched off Customized Login Page and Customized Password Reset Page was already off.
Note I have also added Application Login URI.
When I do email verification I get “Back to (app name)” on button - Excellent.
But when I do password reset I get just “Back to” on button, which is a bit weird.
Looks like the app name field is not being picked up in that scenario.
Note the buttons work in both cases. Keen to hear if anyone else having this problem or not.