in the case where the keycloak server is serving multiple realms using different domains, so for example example.com and otherexample.com, with the auth urls being auth.example.com and auth.otherexample.com the provider seems to set to the url used to access the admin panel (in my case keycloak.mydomain.com).

However i need the callback to be auth.otherexample.com in order to function for the other realm

proposed fix: make the callback URL configurable