entity_hurt_player trigger doesn't track falling_block damage

{
  "criteria": {
    "damage": {
      "trigger": "minecraft:entity_hurt_player",
      "conditions": {
        "damage": {
          "source_entity": {
            "type": "minecraft:falling_block"
          }
        }
      }
    }
  },
  "rewards": {
    "function": "..."
  }
}

From the given function you'd expect that when an anvil land on you it will fire a function but it does not.