I can't speak for anyone else, but for me there have been a few times where I did the ratings for a game, then wrote a comment and forgot to click the Save rating button first. Normally I catch the mistake and do it properly, but twice I've been browsing through submissions, noticed a game I definitely did play and thought I rated and have it not displayed as rated. Of course I went and rated those immediately, but now I'm really worried there are others I've missed.
If it helps, I definitely rated yours!