Are they somehow intercepting middle click on their site so that links do not open in a new tab? Control-click works fine for me, but middle click would just replace the article, which was inconvenient. (latest Chrome on Ubuntu)
I'm getting the same thing and it's incredibly frustrating on an otherwise interesting article. I had to Right Click > "Open In New Tab" for links I wanted to read later.
Same here, Chrome on W7.
Middle-click seems to be working fine here (FF41, OSX)