Thanks, I just tried this, it didn't work at first. Then I closed the private window and clicked refresh in the original window and it appeared. Not sure why that worked.

That sounds like some weird interaction or bug of the private mode. Which browser are you using?

Usually works without a problem for me on FF and Chrome

Note though that you need to close the whole private browser window between each article to unset the cookies.

Chrome 68.0.3440.106