Same here, I got 6 copies of the same note. It seems like note versioning isn't working correctly. Each edit is creating a new note rather than a new version of the current note.
The CEO stated in this interview that they wanted to offer full-note encryption, but that was over a year ago. It's probably a lot easier said than done.
Not being able to encrypt an entire notebook makes it extremely difficult to keep a journal. You end up having to create 365 passwords per year. Trying to find things you've written in the past becomes more and more difficult.