Bookshelfs Not Affect Enchant Altar

Book Shelfs not Affect Enchant Altar

What I expected to happen was...:
Bookshelfs Make Higher Lever

What actually happened was...:
Bookshelfs Not Affect Enchant Altar

Steps to Reproduce:
1. Make A Wall of Bookshelfs
2. Put a Enchant Altar
3. Nothing Leveled!