Questions also answered by the user asking, easily marked by the shaded user card attached to the answer.
You can spot a self-answer in the stream of answers by the fact that the user card shares the same background style (shaded in a different colour) as the OP.
Unstuck by design
Self-answers, if accepted, will not rise or be pinned to the top of the answer pile like normally accepted answers. They will stay in the flow according to the sort view, be it by votes or date of activity.