I noticed a discrepancy in the amount of books on my Kobo.
On the Home Page, field "My Books" indicates 442 books.
However, using TAB "My Books", Filter "All" shows 447 books (this I expected).
I did inspect the DB KoboReader.sqlite directly, which gives 458 books, being 447 side-loaded books + 10 example books + 1 user guide.
So what can explain the "missing" 5 books (442 vs 447) difference on the Home Page?