I login and I'm authenticated.
I click back button and I'm not signed in anymore.
Refresh page - no change, still logged out.
Click on the Sign In button and I'm signed in (without havignng to sign in).
Click on a thread - logs me out. Says I need to be signed in to comment.
Clicking Back or Forward logs me out.
This is so frustrating.
Also, the frequent logging out of users is a bad UX. There is no reason to log the user out every 15 minutes or less when all the other web apps can keep the user logged in forever. This is not a banking app to do so many reality checks.
Please resolve the auth issues and do not log out users until they want to.