Big Dripleaves with a tall stem and suspended Amethyst Clusters get destroyed when loaded as a structure

When you load a structure with a Big Dripleaf that is taller than one block or a suspended Amethyst Cluster, it gets destroyed immediately.

Steps to Reproduce:

1. With a Structure Block, save a structure that contains a Big Dripleaf that is taller than one block/suspended Amethyst Cluster.

2. Load that structure anywhere in the world.

Observed Results:
The big dripleaf/amethyst cluster gets destroyed.

Expected Results:
The big dripleaf/amethyst cluster gets generated with no issues.