CPacketRecipePlacement directly accesses the inventory

Based on 1.12 decompiled using MCP 9.40 PRE 1

The bug

The packet CPacketRecipePlacement directly accesses the inventory, this allows the player to:

• Ignore binding curse
• Ignore item stack restrictions of slots:
  • Item type
  • Maximum stacking number
• Move items out of slots without triggering any additional logic:
  • Use crafting table and anvil without consuming items and using XP