On a mobile I'll often tap away from the message box to close my keyboard or scroll. I usually tap on the right hand side of the message log, because there's no usernames over on that side.
Many times today this has meant simultaneously focusing a message to display its edit and delete buttons and activating one of them. That's exacerbated by my browser's tendency to home in on links and buttons ("you tapped near this link, so you probably meant to activate it"). It's Chrome for Android, though, so that means it's one of the main mobile browsers.
I'd prefer the first tap show the buttons, but not activate them.