See through blocks

Other player (iPhone 3GS) held a block and I (iPod Touch 5G) could see through it, and vice versa.

What I expected to happen:
When the other player held a block I would see the outside of the block.

What really happened:
When the other player held a block I saw the inside.

Steps to reproduce:
1. Other player selects a block
2. Look at the block