AVA TAP output counting asserts incorrectly

package.json

{
  "name": "ava-TAP-counting-asserts",
  "version": "1.0.0",
  "description": "",
  "main": "test.js",
  "scripts": {
    "test": "ava --tap | tap-out | tee tap-out.txt"
  },
  "author": "",
  "license": "MIT",
  "devDependencies": {
    "ava": "^0.9.1",
    "chai": "^3.4.1",
    "tap-out": "^1.4.1"
  }
}

test.js

import test from 'ava';
import {expect} from 'chai';

test('two mixed assertions should produce two total asserts', t => {
  t.ok(true, 'should count first and second assertions');
  expect(false).to.be.false;
});

test('two ava assertions should also produce two total asserts', t => {
  t.ok(true, 'should count first assert');
  t.notOk(false, 'should count second assert');
});