That’s not what I was saying above. And there isn’t even a bug, just a question about what the appropriate UX should be.
My non-priority request was only to discuss the suggestion for a situation where a flag was disagreed with (which is the situation when someone is correctly barred from flagging again). I.e. the flagging was not valid. Maybe it makes sense to allow flagging again if the post is edited (even though the flagger flagged wrongly earlier).
But I now see this as so much of an edge case, probably not worth doing, questionable anyway… I won’t mind if this is closed, although there are some good arguments for the suggestion, there’s also reasons to stick to things as is (which means no work to do).