Acacia wood turns into untextured Oak wood

Acacia wood turns into untextured Oak wood.

What was expected: When chopping down a tree, I expected to get acacia wood blocks in my inventory.

What actually happened: I received an untextured block, what the game labeled "Oak Wood"

Steps to Reproduce:
1. Plant an Acacia Sapling
2. Wait for it to grow or use Bonemeal
3. Use your fist or Ax to chop it down for the Acacia Wood

_Warning
You will crash your game if you try to place this block.