Https everywhere doesn’t seem to be working. A great example is the http://www.bbc.co.uk/news website. BBC Sport is set to https on their website, but if you use the menu on the bbc news site you can fall off https very quickly as their links are all coded http.
Go to bbc news on https. Click on sport. Then click back to news and you have fallen off https.
(Desktop Version - Using Windows 10)