onDamaged aura damageMultiplier doesn't work

Summary

Damaging entity with onDamaged aura applied with damage mechanic does not account for damageMultiplier attribute.

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

Skill below returns ~10 damage when casted

 Damage_Debug:
   Skills:
   - onDamaged{d=200;m=0.5}
   - damage{a=10} 

But using damageSub attribute like in example below works correctly

 Damage_Debug_Sub:
   Skills:
   - onDamaged{d=200;sub=5}
   - damage{a=10}

Intended correct behavior

DamageMultiplier should affect incoming damage from damage mechanic

Server log file

Debug log snippet

Proposed fixes