Flag deemed Invalid, but question closed for the same reason
Some time ago, I've flagged this post: I want to start Java Stand alone(Swing) application without dos prompt to open? with "very low quality" flag. My flag was considered Invalid and then, some time later I see this post closed because it's "closed as not a real question".
"Very low quality" stands for "This question has severe formatting or content problems. This question is unlikely to be salvageable through editing, and might need to be removed".
Why is my flag considered invalid?