Program: 169586
Project: 169586
Buggy source:
@Override public void doEffectOther(boolean beforeBlocksPlaced){
  if (!beforeBlocksPlaced) {
    AxisAlignedBB bounds=AxisAlignedBB.getBoundingBox(x - size,y - size,z - size,z + size,y + size,z + size);
    List<EntityLivingBase> list=world.getEntitiesWithinAABB(EntityLivingBase.class,bounds);
    for (    EntityLivingBase entity : list) {
      double distanceToCenter=new Pos(entity).distance(x,y,z);
      if (distanceToCenter < (size / 2)) {
        float damage=(float)(size / 10);
        damage=(float)(damage - damage * (distanceToCenter / (size / 2)));
        int armorCount=InventoryUtility.getWornMetalCount(entity);
        if (armorCount > 0) {
          damage+=damage * armorCount * 0.25;
        }
        world.playSoundEffect(x,y,z,"String_Node_Str",0.2F + world.rand.nextFloat() * 0.2F,0.9F + world.rand.nextFloat() * 0.15F);
        entity.attackEntityFrom(new DamageMicrowave(cause instanceof TriggerCause.TriggerCauseEntity ? ((TriggerCause.TriggerCauseEntity)cause).source : this,new Location(entity)),damage);
      }
      entity.setFire((int)(10 - 5 * (distanceToCenter / size)));
    }
    for (    Pos pos : metalBlocks) {
      double distanceToCenter=pos.distance(x,y,z);
      float damage=(float)(6 - 5 * (distanceToCenter / size));
      for (      EntityLivingBase entity : list) {
        if (pos.distance(entity) < 4 && world.rand.nextBoolean()) {
          world.playSoundEffect(pos.x(),pos.y(),pos.z(),"String_Node_Str",0.2F + world.rand.nextFloat() * 0.2F,0.9F + world.rand.nextFloat() * 0.15F);
          entity.attackEntityFrom(new DamageElectrical(cause instanceof TriggerCause.TriggerCauseEntity ? ((TriggerCause.TriggerCauseEntity)cause).source : this,new Location(world,pos)),damage);
        }
      }
    }
  }
}

Fixed version (ground truth):
@Override public void doEffectOther(boolean beforeBlocksPlaced){
  AxisAlignedBB bounds=AxisAlignedBB.getBoundingBox(x - size,y - size,z - size,z + size,y + size,z + size);
  List<EntityLivingBase> list=world.getEntitiesWithinAABB(EntityLivingBase.class,bounds);
  for (  EntityLivingBase entity : list) {
    double distanceToCenter=new Pos(entity).distance(x,y,z);
    if (distanceToCenter < (size / 2)) {
      float damage=(float)(size / 10);
      damage=(float)(damage - damage * (distanceToCenter / (size / 2)));
      int armorCount=InventoryUtility.getWornMetalCount(entity);
      if (armorCount > 0) {
        damage+=damage * armorCount * 0.25;
      }
      world.playSoundEffect(x,y,z,"String_Node_Str",0.2F + world.rand.nextFloat() * 0.2F,0.9F + world.rand.nextFloat() * 0.15F);
      entity.attackEntityFrom(new DamageMicrowave(cause instanceof TriggerCause.TriggerCauseEntity ? ((TriggerCause.TriggerCauseEntity)cause).source : this,new Location(entity)),damage);
    }
    entity.setFire((int)(10 - 5 * (distanceToCenter / size)));
  }
  if (!beforeBlocksPlaced) {
    for (    Pos pos : metalBlocks) {
      double distanceToCenter=pos.distance(x,y,z);
      float damage=(float)(6 - 5 * (distanceToCenter / size));
      for (      EntityLivingBase entity : list) {
        if (pos.distance(entity) < 4 && world.rand.nextBoolean()) {
          world.playSoundEffect(pos.x(),pos.y(),pos.z(),"String_Node_Str",0.2F + world.rand.nextFloat() * 0.2F,0.9F + world.rand.nextFloat() * 0.15F);
          entity.attackEntityFrom(new DamageElectrical(cause instanceof TriggerCause.TriggerCauseEntity ? ((TriggerCause.TriggerCauseEntity)cause).source : this,new Location(world,pos)),damage);
        }
      }
    }
  }
}