I was exploring around the map when I came across a border I could not cross but the land continued on some parts and didn't in others. It matched up with the split in the book when you looked at the map in the inventory.
Viewing post in Bug Report
Not actually a bug, only about half the map's terrain is actually somewhat placed, the other half has an invisible border to prevent players from falling off the world while that half is being worked and shaped, there aren't even any colliders over there yet so without the wall players would just fall through the terrain. The game is still heavily in early development after all and making an entire map has proven to be a bit difficult, anywho hope you like it still in its early development phase, :3