I'm trying to log out of Stack Overflow. I can't. It used to work when I had MyOpenId credentials. But I just created a new Stack Exchange account. I can choose the down arrow next to my name, and choosing "log out", then clicking the "Log out" button. Stack overflow then says I'm logged out. But if I choose to log in again, when I choose to log in via a Stack Exchange account I just get a "log in" button that works without asking me my username or password.
How the flip do I really log out?
If it matters, I'm using Chrome.
(This may or may not be a dupe of I can't log out of the Stack Exchange network. - it sounds similar).
Edited to add: This is NOT a dupe of Signing out of Stack Exchange does not sign me out of my email provider because I'm not using an external OAuth provider, I'm using Stack Exchange's own account system. And AFAICT there's no way to log out of Stack Exchange's own account system?