Your comment wasn't flagged! Assuming you mean https://news.ycombinator.com/item?id=19547331. The flagged comment was https://news.ycombinator.com/item?id=19547929, which is also the one I was replying to.

I'm a bit puzzled as to how this misunderstanding arose, and it seems like it might be a UI issue. Perhaps it was because the actual flagged comment was collapsed, so it looked like the [flagged] annotation was somehow stuck to yours?