greetings,
I have federated ArcGIS Online with our Okta IdP using Open IDC protocol. We made sure that the option "Send access token in header " is enabled while configuring the OIDC login. However, when we try to add a WMS from a GeoServer instance that is already federated with the same Okta IdP, a sign-in dialog comes up, meaning the access token wasn't sent successfully in the AGOL request header.
Our purpose of this process is to add WMS layers from our GeoServer instance sharing the same IdP configured with our AGOL without the need to sign in twice.