Put the summary of the bug you're having here
What I expected to happen was...: I expected the Cobblestone Wall to break as easily as other cobblestone items.
*What actually happened was...: The Cobblestone Wall was harder to break with an Iron Pickaxe than a Dirt block with hands.
Steps to Reproduce:
1. Place a Cobblestone Wall.
2. Break it with an Iron Pickaxe.