I've been following the guide provided on Github to add a new provider. After completing all the steps (adding the icon, classes, the new provider on the list of providers) I still can't see it, there is no error on console either. This is on a self hosted server.
TL;DR
Developer trying to add new OAuth2 provider following GitHub guide, completed all steps but provider does not appear on list, no errors shown on console. This is on a self-hosted server.