Sugarcane generation can be sometimes overlaped by village generation, so sugar cane can generate on top of grass path or some other block, even sugar cane cant be placed on top of these blocks.

This can be duplicate/related of MC-149057.

Seed: -4184688192983402955

Coords: /execute in minecraft:overworld run tp @s 219.88 62.00 172.41 -779.13 4.50