If you haven't already go back and read Part I and Part II.
Chrome 69 logs the user in to Google automatically when they sign in to any Google service.
Adrienne Porter Felt of Google's Chrome development team posted a series of tweets "clarifying" this.
They just made me more confused.
Her "/4" tweet is where I stubbed my toe.
Plus, you now only need to sign out in one place before you share your computer with someone else.When my wife signed out of Gmail, it signed her out of Chrome and complained loudly about it (post) (archive.is).
For the time being you can go to chrome://flags//#account-consistency and change this behavior but these workarounds tend to not live long. The flag appears to be broken in Chrome 71 and above.
Here's a post (archive.is) from someone who's really upset with the change.
Here's a post (archive.is) that's a little bit more middle of the road.
Quietly inserting a forced browser sign-in into Chrome, even though possibly done for good reasons, doesn't add any trust points for Google in an increasingly privacy-driven environment. - engadget.comAmen.