[DEVICE: Ipad mini 2]
I tried many resource packs and occurs in all of them.
It loads items, mobs, and everything, except blocks that are loaded like vanilla but different.

For example: Faithful pack (http://mcpedl.com/faithful-pe/) <--- Images of how the texture pack is.

How looks in my game: (http://i68.tinypic.com/msjb7b.png)

As you can see, the texture pack is 32x32 but the game shows blocks at 16x16 and like vanilla but different and blurry. Also, items in hand are exactly as vanilla.

Items are correct: (http://i64.tinypic.com/vx0qrq.png)