When someone flag with a Low Quality Post a question or answer, and someone edits the post, the flag becomes disputed, which means that the flag is automatically dismissed and you lose the ability to flag again, even if the edit make the post even worse.
I don't think this should be like this. There is a lot of link-only posts that usually become edited to keep the link inside some word as a hyperlink instead of the absolute path.
I think the flags should be dismissed when a edit is made, but keep the ability to flag this post again, at least a number of times.
This cause sometimes to think in flagging the post as a Not an answer, resulting in a possible flag declined.