[BUG] creative pick block button giving the incorrect slabs

[DIVIDERE]

Describe the bug
in creative when using the pick block button both the andesite brick and cobble slabs give quartzite slabs instead.

To Reproduce
Steps to reproduce the behavior:
1: place down an andesite brick or cobble slab in creative
2: use the pick block button (whatever you have it bound to)
3: a quartzite slab will appear in your hotbar

Expected behavior

the correct slabs should be given

Screenshots

Info (please complete the following information):

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

Additional context

[democat3457]

stick this issue as a comment on the end of #362 kthx