Broken on Chrome 21

Not sure if the Chrome team messed something up, but even the demo on your homepage is broken as of Chrome 21.0.1180.57, last version of Chrome that I have that I can confirm it works in is 20.0.1132.57. I'm working on trying to find a fix or what could have possibly broke it, but basically, all that gets animated one and a half stripes at the far left of the progress bar.

Start by reproducing the failure in the homepage demo with Chrome 21.0.1180.57 and compare it with Chrome 20.0.1132.57, the last confirmed working version. Done means the progress bar animates normally in the affected browser; the issue does not name a source file or test to run.

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