Nothing game breaking but when you drop a warlock offhand on the ground the book appears closed. You can pick it up and drop it again and the book will be closed. I had dropped a tome on the ground and left the game and reentered the same game, the tome now graphically appears to be “open” though physically impossible. It is essentially standing up straight on 1 book cover end with the over end toward the sky like it is being held open with glue.