I manage a website that is based on D8.
It was quite a mess, so I rebuild a new version from scratch, simply importing the users and the nodes from the old one, then I changed the theme, the block positioning etc
everything works, apart the fact that the, in the login page (called by clicking on the "login" link in the User Account Menu) there isn't the "Reset your password" link
If you place the "user access" block, instead, the "reset password" link is present