Random terrain gets revealed

Random parts of my map gets revealed without any notifications. Any idea what mod can cause it?
Modlist: https://pastebin.com/FgpZaNS4

https://preview.redd.it/fmfv9w0k0q0h1.png?width=1142&format=png&auto=webp&s=418fa15760e5e0450bb1a5eb388e1882434f114b