Bookshelf Texture Coding...

This is more of an issue with the ability to modify textures for resource packs. I do a lot of custom JSON modifications to the blocks and terrain_textures to add additional texture files. In previous versions I was able to modify a Bookshelf to use North, South, East, West as sides to a in the JSON. So instead of using the same texture for all sides, I had been doing the same as the crafting table, dispenser, etc.. In version 1.0.x.x this was working, so now in all versions starting with 1.1.x.x this no longer works. Was there some change in the underlying code to the behavior of a bookshelf? I can send my JSON files if necessary. I also customize some of the blocks to have different textures for the tops, bottoms, carried texture, etc.. and all those are working great! Thanks much!