A bug which only affected left-handed users

Verily, some of our brethren (and sistren) be afflicted with a sinister disposition. While the righteous scroll using the thumb of their right hand - as is good and proper - an accurs'd minority swing the other way. Look, you try writing an interesting bug report without sounding like a clanker, OK! I try to optimise my blog as much as possible. It may not look like much, but it has got it where it counts. I've made a lot of special modifications myself to the base WordPress install. One of those modifications is reducing the amount of JavaScript in use to the bare minimum. Everything functions without it, but there are a few places where it helps - the most notable being comments. That's why I was distressed when a loyal reader wrote in saying there was a bug on my site. When they were scrolling the page a comment box would suddenly appear and interrupt their browsing. I scroll my own site a lot (probably more than is healthy) so why hadn't I noticed this bug? Because I scroll with…