This is a bug I've seen before but for authors who have larger bodies of work. Looking an Omachuck's stories, https://storiesonline.net/a/omachuck with the default sort-order (Title), I see "Woody" as story number 4. Now going on to the second page, there is one Story. "Woody", occupying slot 11.
This means that a story is being suppressed. It is the one Omachuck mentioned in this blog: https://storiesonline.net/blogentry/42599
I have seen this with other authors as well, but by no means all. I assume that a pre-condition is that the list of stories has to go over multiple pages and Omachuck's 11 is the minimum needed to trigger it.