Sometimes in my Minecraft world, I find these weird spots where the grass blocks are missing in a randomized pattern, as seen below. It might be a result of Ruined Portal structures failing to generate in these places, I can be wrong, but that's my idea. This is a minor bug, but I'd love it if you fixed it.
MC-229112
strange bug regarding spots where dirt blocks are missing in a random formation
Resolved
Works As Intended
0
This is actually a very rare terrain feature called a "basin". As far as I'm aware it's intentional and not a bug.
https://minecraft.fandom.com/wiki/Terrain_features#Basin