Describe the bug

breaking gneiss brick slabs with a pick drops red granite brick slabs
breaking a ecolite brick slab give black granite brick slab
marble > rhyolite
quartzite > andesite
migmatite > dacite
etc
red granite brick slab when broken still drops red granite brick slabs, same with black granite

To Reproduce
Steps to reproduce the behavior:
break stone brick slabs in survival with any pickaxe (tested with bronze and soul steel)
Expected behavior

slab drops itself and not brick slab of different type
Screenshots

Info (please complete the following information):

• Modpack Version:
  • 2.77.5
  • [ x] 3.0 BETA 5
  • Other:
• Server or Singleplayer:
  • Server
  • [ x] Singleplayer
• Version the world was created on:
  • 2.77.5
  • [ x] 3.0 BETA 5
  • Other:

Additional context

Duplicate of #362