Found this question with a suggested edit pending edit. But it looks like it's the OP that has done the edit. Shouldn't this be approved automatically?
Users never need to suggest edits to their own posts, they can either edit outright (the norm) or they can't because edits are blocked (eg, post is locked).
In this case, the edit was proposed at ~16:49 and on the user account history I can see that a user account merge happened at ~17:11.
It is highly likely that the user returned to the site on a different account (they are unregistered, so they simply used a different computer/browser or don't keep their cookies) and so wasn't the question's owner when they suggested the edit, but that account has since been merged in to the original.