title: Spring Security OAuth2 doesn't kill the session and display login again
body: <p>I am following this tutorial about Spring-Security-Oauth2 :</p>
  
  <p><a href="https://github.com/spring-guides/tut-spring-boot-oauth2/tree/master/logout" rel="nofollow">https://github.com/spring-guides/tut-spring-boot-oauth2/tree/master/logout</a></p>
  
  <p>The problem that I am facing is, when I clicked the logout button this send a post request to the /logout endpoint to kill to session, but when I clicked the LogIn button again I expect to see the login Form Again. But It seems that when /logout is called, this is in somewhere saving the information of the last logged user and always re-login again and does not display the login form.</p>
  
  <p>I don't know how to kill the session in the SSO, I am using the  same facebook OAuth.</p>
  
  <p>Thanks for help.</p>