Missing novels in my shelves?

(Seems like I got logged out from the forums when I logged on the main site and my thread didn't show up. I'm posting this again just in case it didn't get submitted, but if it did then I'm sorry.)

Some novels in my to-read and current shelves aren't showing up when I'm on the 'all' tab(?) in that blue bar thing above my profile, and sometimes they appear when I click on a genre like 'fantasy', 'online novels', etc. It's really troublesome when I can't remember a novel's genre in my to-read list because I can't find it anymore. Any help please?