Was the solution to remove filtering by "owned" and "unowned" altogether, because I don't seem to have the "Personalized" filter options in any of the categories you mentioned, Doujin|Games|Manga.
The other thing I find weird is that there's no filter for owned in "Library" view. Is that just me?
Lastly it seems like some owned books don't show up in library at all. It would be great to have a way to filter for stuff we own - hopefully that's being worked.