Basic Maths, the WordPress theme I use on this site, seems to have developed a rendering problem in Google Chrome. The problem is only present in Chrome, and not Safari, so it’s not a WebKit issue, and Gecko in Firefox doesn’t exhibit the problem either.
You can see the issue on any individual post page, such as this one from the demo site:
Notice how the borders at the top and bottom of the meta box overrun the first sidebar column in Chrome.
Not being a CSS wizard, I’m not in a good position to derive a minimal test case from the theme’s CSS, and I can’t say precisely when the issue first appeared in Chrome, either (although I will say that I run the Chrome dev version). I know this makes for a bad bug report, but I figure it’s better than nothing to document the issue publicly. The issue doesn’t seem to be specific to certain Basic Maths installations, either; both this site and the demo site, as well as others I’ve come across online, are similarly affected in Chrome.