I have been noticing this issue for quite a sometime now but this is not always replicable. The issue is that when I try to logout and click on "Logout from everywhere" option, it takes me to main Stack Overflow page. I assume that I have been logged out of the system.
But next without closing the browser, if I type in gmail.com, it immediately logs in without asking me for credentials. The reason, I use my Gmail account to login to Stack Overflow too. But when I logout, shouldn't Stack Overflow take care of my logging out of Gmail account too?
So is this a known thing or is the application designed to be this way so that I have to explicitly logout from gmail account too or close my browser.
Btw, I use Stack Overflow in Mozilla Firefox browser.