Actually, that's not all. It took me 3 attempts just to get my submission to actually upload. The first time I attempted to uploaded it, it just wiped every field (render, screenshots, submission title, etc.) empty and didn't even upload. Second attempt did the same, and it finally uploaded on the third attempt. I think there might be a problem with the upload system as well, but I'll probably file another complaint for that since it's not the same thing as this.