Minecraft 18w50a, Minecraft 19w02a, Minecraft 19w11a, Minecraft 19w11b
The plains village house structures have tall grass around them saved to the structure, because they are always assumed to be completely in plains. However, sometimes, the structure spawns on the border of another biome that has surface blocks that tall grass can't grow on.
Due to MC-140452, it might also possible for the aforementioned tall grass to spawn in the air.
How to reproduce
Seed: 4983639407239914443 Coordinates: /execute in minecraft:overworld run tp @s -481.22 77.00 -272.66 -43.50 23.55
- relates to
MC-140242 Decorations such as grass, flowers, ferns, sweet berry bushes and dead bushes can generate on invalid blocks in villages and trail ruins