Since the introduction of ERP5 Login, authentication by Access Token is broken, and it is only working if erp5_login.getReference() == person.getUserId()
The scriptable part of access token changed, now scripts must return a user object - on which the plugin will call getUserId (it was not clear what they should return before, maybe login, but they should return a user id, not a login, as the token plays the same role as a login). To make it clear and to intentionally break compatibility as this is now something different, these scripts have been renamed to be getUserValue type based methods.