I suppose this is an extension to Comments incorrectly submitted as an answer instead: what should we do?
First off, I'm presuming that new users cannot answer their own questions? Is this correct?
So they can self answer, but I've seen quite a few occasions where they don't!
In this example the user, has edited the question to include an answer. I've seen this quite a lot. I've always flagged this as
Unclear what your asking
For me, the user editing the question in this manner invalidates the question. Is this the correct thing to do?
Could/should we make the answer my own question link more obvious?
Did have a quick browse about meta but couldn't see anything specific to this scenario.