unbreakable doesn't work

block: COBBLED_DEEPSLATE

hardness:
  base: 20
  min: 10
  max: 30

use-modifiers:
  vanilla:
    enabled: false
    tools: false
    efficiency: false
    haste: false
    water: false
    air: false

states:
- unbreakable{}

Unbreakable states were used, but the blocks were broken just like vanilla Minecraft
i used paper#273, breaker2 2.6.3, MythicMobs 5.1.4