I was trying to write something down with a book and quill. Before I could finish, however, my entire written page so far was deleted! I did a little more testing with the book and quill and figured out that the culprit was the letter "a". Every time I typed it, the entire page was deleted and restarted. I underwent a little more testing and it occurred again in the search bar in my inventory. If it helps, I'm playing the latest snapshot. Does anyone know if this is just me? Or is it in the game?