Have at least one screen's worth of Personal Books in your list.
Open Tools > Personal Books
The list starts out scrolled down so the second item is at the top of the window (every time, no matter where you last left it scrolled to).
Expect it to open to top of list (or possibly remember where were when you last closed it, but the Library doesn't work that way, so I think neither should the Personal Books list).
For a while, there, I thought my first book was missing from the list (even though I could open it from the command bar).