Password managers don't offer to save on Sign up

I am not sure why, but none of the password managers are picking up my forms to save when I signup or change password, in both live and draft modes of my site. The fields all have the right type “email”, “password”, but the manger doesn’t ask to save/update the information. On the login screen it works and fills in the password, OK but not on the signup or change password screen.

Any ideas?