OAuth2 RefreshSessionAsync does not update Access/Refresh tokens for current session.

[drasticactions]

I need to step through it, but there is either a bug in OdicClient where calling it doesn't update the existing OidcClient access and refresh token, causing any future call to fail since it will try to use the original access token, then use the refresh token to fix it, then fail since it was already used.

You don't have to call this method when using OAuth, you can rely on AtProto.SessionUpdated to tell you when the token is updated, then save and reuse it for future sessions.