Not sure if I'm doing anything wrong but when I mark books as finished in the order I read them in, they don't always show up in that exact order under "Books read". So the last book I finished might show up as the second last book. I have tried removing the book and marking it as read to see if that will help it show up in the right order but it doesn't chance anything. I find it especially annoying when I read a series in order and the order changes under "Books read".
Hope it makes sense.