Oak Roofed Saplings (New one for 1.7) is not growing with bonemeal!

When I try Bonemealing an Oak Roofed Sapling, it doesn't grow. I Tried over 30 Bonemeal, but it won't grow.

What I expected to happen was the sapling to turn into a tree

What actually happened was that I wasted half a stack of Bonemeal trying to grow 1 Oak Roofed Tree

Steps to Reproduce:
1. Plant an Oak Roofed Sapling
2. Bonemeal it. It won't work.