Summary:

Bamboo can replace leaves when generating. Usually only a few of the outermost leaves blocks are replaced, but sometimes bamboo can generate through all the foliage. It also creates a bug such as vines growing on bamboo.

Examples:

Seed: -732078047
Coordinates: 293 80 -507
Coordinates: 474 81 -654
Coordinates: 767 74 -702

Steps to reproduce:

1. Create a world with the specified seed.
2. Visit the specified above coordinates.

Observed results:

Bamboo can replace leaves blocks.

Expected results:

Bamboo cannot replace leaves blocks.

Image: