I've integrated Jenkins SSO with MS ENTRA. It works when logging in but when I click logout and try logging in back again, we are getting redirected to the following URL: https://<jenkins-url>/samlLogout/ with message: "You are now logged out of Jenkins; however, this has not logged you out of SAML."

As a workaround if I try clearing the browser cache, use incognito mode, or enable Force Authentication in Jenkins, login succeeds. But users are required to enter their email and password every time which is not efficient.

I've used this https://github.com/jenkinsci/saml-plugin/blob/main/doc/CONFIGURE_AZURE.md instruction to setup SSO via SAML for Jenkins.