Hiya, it's still buggy I'm afraid, but I've done some testing and it seems to be if you've saved something as a draft first. It then doesn't seem to take things out of draft and put them into the queue.
I've tried it with two stories. The first I just submitted. You can see on your stories list that it awaiting moderation - first screenshot.
The second, I saved as a draft, then tried to edit and submit. It's still in my unpublished list - second screenshot.
If you've tried to submit something and it's still in your unpublished list, maybe try submitting it as new and see if that works.
I do appreciate it's frustrating, but the IT guys have been working flat out to try and sort issues.