issue with stats. Type: DAMAGE_MODIFIER not working with ATTACK trigger

Summary

Describe the bug encountered in detail.

Steps to reproduce

Provide a full set of steps used to reproduce the bug, including links to SEPARATE Pastebin pastes for each relevant configuration file.

Current behavior

custom stat stop working if type is DAMAGE_MODIFIER and trigger is ATTACK. DAMAGE_BONUS with ATTACK works well

Intended correct behavior

well... should work?

Server log file

https://pastebin.com/vzPjfZNw

Stat:

DAMAGE_CUTTING:
  Enabled: true
  Type: DAMAGE_MODIFIER
  Priority: 1
  Triggers:
    - ATTACK
  Conditions:
    - hasoffhand false
  ExecutionPoint: PRE
  DamageFormula: 'd + v'
  Display: 'Blunt Damage'
  DamageType: CUTTING
  BaseValue: 10
  Formatting:
    Additive: '+<value> Blunt Damage'
    Multiply: '+<value> Blunt Damage'
    Compound: 'x<value> Blunt Damage'

Item:

generic_sword:
  Id: iron_sword
  Stats:
  - DAMAGE_CUTTING 7 ADDITIVE
  - ATTACK_SPEED 0.6 ADDITIVE
  Attributes:
    MainHand:
      Damage: 0 MULTIPLY
  Options:
    HideFlags: true