It depends on what category your file is into. If the reviewer is permitted to review files from another category he or she can’t review your file. I guess that’s the reason.
Hello guys, in the review queue if someone begins reviewing your file and doesnt finish for whatever reason it becomes locked so that that person can return to it later without the worry of someone else reviewing it as well. Its possible that your file is locked and thats why you see it jumping around in the queue like that.
Now that clears my mystery, thanks.