Does not work in FF 22.0, neither in Chrome: 28.0.1500.71 or Opera. (OS: Linux Mint)
The problem with Chrome 28.0.1500.x (.95 here) is troubling me. It seems a more recent problem that I'm convinced is another browser bug.
Thanks for the detailed version report, that's really going to help. :-)
Works with 28.0.1500.95, too.
However, looking at the console, I see occasional instances of Resource interpreted as <blah> but transferred as MIME type <foo>. Not a big deal, but maybe a pointer.