Page on a full sized browser on a 13" screen with ublock:
https://www.dropbox.com/s/gmyi3jjwq25w0d1/surface_book.png?d...
https://www.dropbox.com/s/gmyi3jjwq25w0d1/surface_book.png?d...
Turning uBlock off didn't seem to help at all.
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.
But your point still stands: even Microsoft doesn't trust Azure's CDN offering.