That's quite odd... WebViews are a hard beast to figure out cause web pages generally contain quite a few elements (sometimes 20k+), which makes it rather annoying to search and deal with. Chrome with the --force-accessibility-renderer flag has issues with element positions due to caching (I think). Safari has much better support but it's a tiny bit slower than Chrome. Right now, I'm focusing on other features. Hopefully browsers get better!
Bug report: http://i.imgur.com/wTwXpx2.png
(your "reply" link isn't highlighted, but all others are)