The Bug
Bamboo cuts through naturally generated structures like villages and jungle temples when these structures generate through the bamboo jungle biome or meet the biome.
How to Reproduce
use the seed 66856017735265 and default world type
go to -492 74 -206 to see a couple village houses near you
❌ -> some village houses have bamboo cutting the sides of them.
What Probably Happens
The bamboo stops one block too high for certain blocks like oak stairs on village roofs facing up in any direction, therefore penetrating the block. The block is then replaced by bamboo. A simple fix is to stop the bamboo one block lower. This doesn’t affect every block. Leaves work as intended in MC-137762, but this ticket doesn’t describe leaves.
Notes
This also affects jungle temples.
Relates to MC-137762 (hope it's not a duplicate)
Can confirm in 21w38a.