Bug in filtering books by author

When I look for books in my collection written by Isaac Asimov (dermika.listal.com/owned/books/1/?author=Isaac%20Asimov), I get only one result. Although I'm sure I have at least 7 books in my collection by him.

Could you please look into this?

i have the same problem

a good thing i don't have any Asimov books, otherwise i would 've encountered the same problem ;)

Well it's been a while but I've finally fixed this, it only affected books manually entered btw.