A blank SAML redirect screen is seen even with redirect message disabled

Issue

• A blank intermediary page (showing "Please select your identity provider" title and

  /portal/c/portal/login?redirect=%2Fportal%2F&refererPlid=[sanitized]&p_l_id=[sanitized]

  URL) is being seen even with the hotfix installed (with fix LPS-172619) and the

  saml.idp.redirect.message.enabled=false

  property set.
• Even including hotfix with LPS-155687, LPS-168688, and LPS-172619 do not work to skip the redirect page.

Environment

• DXP 7.3

Resolution

• This redirect page is expected behavior and the redirects are necessary for a proper SAML "handshake" to pass messages from SP to IdP, then back to SP.   Bypassing certain redirect pages can interfere with the SP to IdP “handshake”.
• LPS-168688, LPS-172619 and LPS-155687 never promise to prevent a redirect page but can help adjust redirect seen by users.
  
  • LPS-168688 allows portals configured with just one IdP configured to automatically redirect to the IdP.
  • LPS-172619 allows the redirect message to be customized or removed (with the saml.idp.redirect.message.enabled portal property)
  • LPS-155687 ensures the SAML SSO can function with a non-root context path,

Additional Information

• Users see the message "Redirecting to your identity provider" before redirecting to OKTA login screen