Unless it’s just a temporary bug, they’ve ruined Books, or iBooks, or whatever they’re calling it now. I read almost exclusively from my iPad. Previously, there were several settings for how you view books. One, All Books, showed everything all the time, including PDFs. Books showed all books other than PDFs. When you made a new category (a folder with a name you would put books in, like an individual author), that book could be taken out of the Books area, and put into the folder. Then there would be no books in the Books area, or, just a few that you didn’t make a category for, because you only had one of the type.
So you would just end up with a few nooks there, at most. When you got a new book, it was easy to find, and read. When you finished, you would put it into the category you wanted it in, and it would leave the Books area. This was very good for tracking new books, books you didn’t yet categorize, and for books preordered that hadn’t come in yet.
But now they’ve eliminated the All Books area, and the Books area now contains everything. I’ve got over 200 books and PDFs. I have to look through everything. It’s very confusing. Did I put a particular book in a category, or didn’t I? I have to look through the category to tell. Finding a book you were reading but had to close because of needing to read a PDFs manual is now lost amongst everything else. A book you ordered several months ago, but just came in is now lost somewhere, and you have to look again through everything to find it, if it did come in.
It’s a real mess!