> Just kidding, trick question, the answer is NEVER.
What? The answer is ALWAYS. Set your start page to be `about:blank` and you see a blank page. I've had this as my starting page in every single browser since the 90s.
You can have about:blank be the on start up page and the home button, but not for new tabs. You used to be able to do that. Won't be surprised when start page will need to be an https link, you know for security reasons.
As a side note, only yesterday (on a Windows 7, so not an issue related to the latest Windows) I couldn't initially connect with Chrome to a (of course local) oldish router (actually an access point) to change a setting (Wi-Fi channel) because it "talked http" while Chrome wanted a "https" (for security reasons).
Chrome has that setting too, but it's not that simple. It's only available as an enterprise policy. If anyone doesn't know about this, Chrome has tons of hidden settings configurable through Group Policy on Windows and through /etc/opt/chrome/policies/managed/policies.json on Linux.
I have a personal new tab chrome / firefox extension that does exactly this. A black screen, a button, that's it. Don't install someone else's extension -- make your own off a minimal example on github. It's... well it's about the simplest bit of code I've written that I rely on daily.
Just kidding, trick question, the answer is NEVER.
(No, an extension which overrides all the bloated pile of crap after it's already been processed and rendered does not count.)