iBooks chapter titles missing in iOS 8.4
I have a large number of audiobooks (radio shows with individual episode names, books in a series which I formatted as separately-named chapters in a single volume, books with specialized chapter titles, etc) for which all the chapter titles appeared properly while using the Music app in iOS 8.3. But after I upgraded to iOS 8.4, the titles are all gone in the new iBooks app and replaced with "Track 1," "Track 2," etc, so I have no idea which is which. I really don't want to have to redo my entire collection just to get my books to appear properly. When will this be fixed?
iPhone 5s, iOS 8.4