User is not prompted to login after logout

[Sruthin86]

I'm running into a problem where a use is not prompted to login after logging out. The logout seems successful and the user is redirected to the logout url param that is passed. When /secure/* pages are visited immediately after logout the user is not prompted a login--they are directed to the /secure/* pages. The mod_auth_openidc_session cookie is not removed after logout. Manually deleting the cookie prompts the user to login.
Below is my configuration. Any help would be appreciated!

#OIDCInstanceConf
  OIDCProviderMetadataURL https://auth.test.services.myunv.edu/oauth2/default/.well-known/openid-configuration
  OIDCProviderIssuer https://auth.test.services.myunv.edu/oauth2/default
  OIDCResponseType "code"
  OIDCScope "openid profile libmainweb"
  OIDCRedirectURI /secure/
  OIDCUserInfoRefreshInterval 900
  OIDCPassIDTokenAs claims
  OIDCPassUserInfoAs claims
  OIDCPassClaimsAs headers
  OIDCSessionType server-cache

  # OIDC secret variables
  OIDCClientID sample_id
  OIDCClientSecret sample_secret
  OIDCCryptoPassphrase sample_phrase

# OIDCRedirectURI is a vanity URL that must point to a path protected
# by this module but must NOT point to any content
  
#Claims available for primaryAffiliation: FACULTY, STAFF, EMPLOYEE, STUDENT, RETIREDFACULTY, RETIREDSTAFF

  <Location  "/secure/">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
    </RequireAll>
  </Location>

  <Location "/secure/current">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      Require claim not primaryAffiliation:RETIREDFACULTY
      Require claim not primaryAffiliation:RETIREDSTAFF
    </RequireAll>
  </Location>

  <LocationMatch  "/secure/(employee|currentEmployee)">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      <RequireAny>
        Require claim primaryAffiliation:EMPLOYEE
        Require claim primaryAffiliation:FACULTY
        Require claim primaryAffiliation:STAFF
      </RequireAny>
    </RequireAll>
  </LocationMatch>

  <Location "/secure/currentFaculty">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      Require claim primaryAffiliation:FACULTY
    </RequireAll>
  </Location>

  <Location "/secure/currentStaff">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      Require claim primaryAffiliation:STAFF
    </RequireAll>
  </Location>

  <Location "/secure/allFaculty">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      <RequireAny>
        Require claim primaryAffiliation:FACULTY
        Require claim primaryAffiliation:RETIREDFACULTY
      </RequireAny>
    </RequireAll>
  </Location>

  <Location "/secure/allStaff">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      <RequireAny>
        Require claim primaryAffiliation:RETIREDSTAFF
        Require claim primaryAffiliation:STAFF
      </RequireAny>
    </RequireAll>
  </Location>

  <Location "/secure/allEmployee">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
      <RequireAny>
        Require claim primaryAffiliation:FACULTY
        Require claim primaryAffiliation:STAFF
        Require claim primaryAffiliation:EMPLOYEE
        Require claim primaryAffiliation:RETIREDFACULTY
        Require claim primaryAffiliation:RETIREDSTAFF
      </RequireAny>
    </RequireAll>
  </Location>

  <Location  "/secure/all/">
    AuthType openid-connect
    <RequireAll>
      Require valid-user
    </RequireAll>
  </Location>

Here are the version details

libapache2-mod-auth-openidc:
  Installed: 2.4.9.4-0+deb11u3
  Candidate: 2.4.9.4-0+deb11u3
  Version table:
 *** 2.4.9.4-0+deb11u3 500
        500 http://deb.debian.org/debian bullseye/main amd64 Packages
        500 http://deb.debian.org/debian-security bullseye-security/main amd64 Packages
        100 /var/lib/dpkg/status

[zandbelt]

most probably you're experiencing SSO... the server logs will tell you what happens, and show what cookies are deleted/presented; anyhow I'd advise you to upgrade to the latest version

[Sruthin86]

Thank you, we are indeed using SSO.

[Sruthin86]

Would you be kind enough to provide guidance on signing out of SSO?