The Book and Quill that I use as a diary in my realm seemingly randomly clears pages. The farther into the book, the less likely the page is to get cleared. The first page clears itself every time i type on it, as well as the third page. I exit the book, and the next time I open it the page is cleared. This doesn't seem to happen past page 10, and you will notice it if you play for 30 minutes.

This completely destroys the function of the Book and Quill, as it does it with every book. It doesn't happen with signed books.