Sigh, every time my site hits hacker news or reddit I have to mention this... it's a Webkit bug. I reported it 5 releases ago, it sits unloved and unfixed. I imagine i'll just redo the site before they address it.
Ohh that makes sense, I also wondered if it was Chromium in Linux thing so I opened it up in Chrome in my work iMac and I noticed the same thing, albeit less pronounced. It's very pretty when it does work so that kinda balances it out. In any case your content is worth it, thanks again for the awesome sauce.