I added own crop:

saxilliaZbendata,minecraft:cobblestone,minecraft:cobblestone,1,6,It give cobblestone! 

In book cobblestone has missing texture:
https://dl.dropboxusercontent.com/u/25172450/bugs/0a6640111ef7bd9261b457423cf2f438.png

It seems that happens for all blocks, I'll look into it

Fixed
(InfinityRaider@99c7944)