[mdo]

Up until a few weeks ago, we had the whole issue clickable. It'd toggle the select checkbox for bulk actions across multiple issues/pulls. However, we opted to skip that as missing a click on say a milestone name, user avatar, or label would then toggle that issue's selection. It'd be even worse if the accidental clicks sent you to a specific issue as you'd get inadvertent loads and have to go back.

Bottom line? Too frustrating for common use, so we skipped it.