Hey @NickFR, it seems the option from your screenshot refers to single sign-on/sign-off logic not supported by n8n.
The desktop version would unfortunately not have received the aforementioned fix yet as it is currently using [email protected]. To use the very latest version of n8n, you might want to consider sticking to Docker. That said, there is also another fix for OAuth2 problems on its way which should go out with the next release: Scope parameter is not sent with my Oauth2 API credentials - #11 by Jon