Book & Quill Page 10 not saving progress

I own a realm (purchases via Mojang), and when writing in the Book & Quill, page 10 continues to not save progress. After closing the book and re-opening, page 10 will be blank. All other pages save their progress.

 

Edit: I turned off the profanity filter and although the page had no profanity written in it, it seems to have resolved the issue.