This is hardly new...<p><a href="https://lifehacker.com/how-to-navigate-away-from-a-website-that-disabled-the-b-1849070714" rel="nofollow">https://lifehacker.com/how-to-navigate-away-from-a-website-t...</a><p>I've always gotten around it by Long pressing the Back button and then selecting the page to go to. Bypassed your "block" as well...<p>This is not a big of a find that you think there is. And I'm not sure calling it a "Zero Day" is appropriate either as it doesn't exactly cause much of a problem.