BUGFIX: 1) Fixed a bug that was enabling the book exploit protection on 1.17 servers where it is not needed.
New Features!
1) Expanded bedrock breaking protection to prevent using nether portals to break blocks such as bedrock, barriers, structure blocks etc.
2) Prevents portals from spawning at y=255 and creating this:
https://i.imgur.com/mqAXdpU.png