Crops generating on Grass path, GrassBlock in a savanna village

So I was just simply playing Minecraft because I was bored :c and I tried the Caves And Cliffs preview datapack and I found a village and when I saw these cliff Farmland or what should I call it and I found these bugged crops.

What I expected to happen was...:
Crops generate on a Farmland

What actually happened was...:
Instead crops generated on Farmland and Grass Block, Grass Path and this couldn't be done without commands

Steps to Reproduce:
1. First it's generating and I don't how a world generating but you need to put the seed 9217343569008290631 for the world (Used Caves and Cliffs preview datapack)
2. If the world generated teleport to location -387 67 208
3. And if you teleported there you, would see the crops generated to the grass block and path