Edit: after letting it load for 3+ minutes, the page does load successfully, giving this: http://i.imgur.com/qnNlvYj.png
So maybe it does work! Eventually.
didn't find out why but resizing the browser (from fullscreen to something smaller) fixed this issue. Of course you can resize it back to fullscreen afterwards.
https://www.dropbox.com/s/gmyi3jjwq25w0d1/surface_book.png?d...