The rationale behind allowing the Edit button in the LQ (low-quality) review queue is if a reviewer didn't actually fix "all the problems" (what the usage guide says), it will at least bump the post for more eyes.
My experience, and others' too, is that reflagging does nothing, and unless you ask a mod to check your flag, it will eventually age away. For the time being, I'm looking for support regarding this issue.
One such answer where the flag didn't (as far as I can see) create a new review queue and the Edit button was misused:
https://aviation.stackexchange.com/posts/70283/timeline(Update: A moderator has now deleted the post.)
PS I come across this issue relatively a lot, so it is of concern; I can only imagine what more busy sites go through.
I already brought up the relevant part that concerns the Aviation site by asking, "Please don't make a minor edit for a low-quality-flagged post from the review page".