1.8 Resource Packs Broken In 1.9 Snapshots

In the 1.9 snapshot 15w31c (and possibly others, I've only tested it in this version), when you use a resource pack made for 1.8, most of the textures are broken. I've included some screenshots, the first of the creative inventory with default textures, and the other of the creative inventory with the resource pack I use. I hope someone can fix this, I really enjoy this resource pack.