ember.js: [IE11] @tracked property initializer is not applied

In IE11 the property initializers for the @tracked decorator are not applied. The following test succeeds in Chrome, but fails in IE11.

tests/unit/tracked-test.js

import { module, test } from 'qunit';
import { setupTest } from 'ember-qunit';
import { tracked } from '@glimmer/tracking';

module('Unit | @tracked', function(hooks) {
  setupTest(hooks);

  test('it applys the initializer', function(assert) {
    class Subject {
      @tracked
      property = 'foo';
    }

    const subject = new Subject();

    assert.strictEqual(subject.property, 'foo');
  });
});

Reproduction repo here: buschtoens/repro-tracked-ie-error