The bug

JSON text is no longer resolved if a player that is not an operator opens a non-resolved written book.

To reproduce

1. Run

   /give @s written_book{generation:0,author:violine1101,title:"A Test Book",pages:['{"selector":"@s"}']}
   

2. Open the book
   → Your name is written in the book
3. Delete the book
4. Run the command again
5. Deop yourself
6. Right-click the book
   → It says {"selector":"@s"}

Original description

I have Written Books made that show scoreboard data values within the pages etc. If a player that is Not OP looks into the book, the entire JSON Code/Format is displayed rather than the result of the JSON Text which results in an entire page willed with numbers and letters and symbols etc. If a player with OP looks into the book it appears perfectly fine and properly displays the Scoreboard/JSON text components.