The fast graphics leaves textures are broken when using resource packs, for example: http://imgur.com/hfzEHvN,FIjlDsQ in the Faithful 32x resource pack, the green in between is the see-through area if your graphics are on fancy. And the default leaves: http://imgur.com/hfzEHvN,FIjlDsQ#1 No green inbetween. And this is not an error in any non-snapshot releases such as 1.7.10