Apple Books incorrectly marking audiobooks as finished

I have several audiobooks that I listen to at one time and flip between listening to one or listening to another. Just in the past week I noticed that two of the audiobooks were marked as finished when I was only 80% through them. I had to go back in the library to find them and mark as still reading. Please fix this issue. I’ve noticed this happening often. Or give me an option for you to never mark any book as finished ever; unless I manually click the finished button under settings. Because the automatic way isn’t working.