Mangrove trees uses oak logs as support instead of mangrove logs

Summary
The mangrove tree uses oak logs instead of the mangrove logs as the tree support.

How to Reproduce
1. Find a mangrove biome, or grow a mangrove tree by bonemealing the mangrove propagule.

Observed Result
The mangrove tree has oak logs instead of mangrove logs.

Expected Result
The mangrove tree should have mangrove logs instead.

Original Description
every mangrove tree is made of oak logs