Mangrove trees don't have proper log branches (or lack of), causing the leaves to decay

The mangrove trees have missing branches in the beta/preview, which may be caused by improper log branches generated in the trees.

How to Reproduce

1. Find a mangrove swamp biome
2. Fill replace the mangrove leaves with air to reveal the mangrove log branches

Observed Results
The mangrove log branches are missing.

Expected Results
The mangrove log branches should generate.