On Chrome on my desktop (Version 48.0.2564.82 m (64-bit)), this works fine. Discourse takes a second to load, and I end up on the topic page. In Safari on iOS (9.2.1), however, thinks work differently: Discourse loads surprisingly quickly, and shows the loading spinner. Sometimes, this completes quickly and you see the topic; but most of the time, you get stuck on the spinner until you reload the page. If it works, reloading and trying again seems to reproduce it most of the time. Seems like Safari is a special snowflake here
+1 on Desktop Safari - also seems to be happening more frequently on my site. As in it used to happen now and then and its happening most of the time now.