I had something weird happen yesterday. Wasn't able to replicate it, and upon deleting a story from the library redownloading it fixes the problem (but not overwriting it while it was still in the library, strangely enough), so it isn't really that much of an issue, but I was curious if this happened to anyone before or what might be causing it.
I was downloading a few stories in bulk. Two of them had a very similar storyID, 1574 and 157, 1 and 3 chapters long respectively. Instead of two stories I have gotten only one - with title, author and first chapter from the first story, and the metadata page and chapter 2 and 3 from the second one.