/wp-login.php/?loggedout=true not working

I’ve updated to WP 5.2.3 and got this logout URL not working.
Steps:
Logged in as admin, paste this link to the URL /wp-login.php/?loggedout=true. I can see the WP login/registration form, so it looks like the logout function is successful. But when I entered this URL /wp-admin again, I still can access the dashboard like I haven’t logged out and the sessions/cookies are still available.
I have WP_DEBUG = true but didn’t see any error.

please view screenshot at: Screenshots of this issue.
Any response is appreciated.