Here's another Vox library problem that popped up for me today.
The main book I'm reading no longer shows up on my home screen and I have to open the library and find it there. Fortunetely my books are arranged by author and this author's name begins with A but I'd still prefer it the way it was. This happens every time; it's not just an isolated incident. It's still bookmarked so I can find my place at least.
When I checked my much referenced User Guide to find a solutuion, guess what? It now no longer shows up in my top five books either and it's listed way down under U!