Fimfiction Frustration

If there's one thing I have a love/hate relationship with here in Fimfiction, it's the bookmark system. On the one hand, it's great to be able to automatically continue reading a story from where you left off, but it doesn't seem to register with shorter chapters. Even if you read a story or chapter that's 500 words or less the entire way through, even bleeding into the comments section a bit, the site will still say that you haven't read that chapter or aren't done with it. It's really annoying and needs to be fixed. I know that you can delete stories from there, but it still bugs me more than it should.