Yeah, this threw me for a loop as well Rob.
Okta -> Cloud Console via SAML admin login, I was told by support that the group membership validation for RBAC occurs at the Cloud Connector doing an ldap lookup. Authentication happens at Okta, attribs are passed to
saml.cloud.com/acs, prelim access is granted, call is made to cloud connector to do ldap lookup for for group membership to allow access to IAM \ Admins \ RBAC permissions based on AD groups (second screenshot).
This worked flawlessly up until this weekend... in the "what changed" conversation, the only thing was the Cloud Connector update this weekend.