Ember Power Select belongsTo Async Issue

components.ember-power-select-async-property\.js

import Component from '@glimmer/component';
import { tracked } from '@glimmer/tracking';
import { inject as service } from '@ember/service';
import { action } from '@ember/object';

export default class extends Component {
  @tracked log;
  @service store;
  @tracked record;
  options = [
    { othername: "A" },
    { othername: "B" },
    { othername: "C" },
    { othername: "D" }
  ];
  constructor() {
    super(...arguments);
    this.options = this.store.findAll('dummyrelationship');
    this.record = this.store.findRecord('dummy',1);
  };
}

controllers.application\.js

import Controller from '@ember/controller';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';
	constructor() {
    super(...arguments);
    $.mockjax({
      url: '/dummies/1',
      responseTime: 100,
      responseText: {
        data: {
          type: "dummy",
          id: 1,
          attributes: {
            "name": "Bob"
          },
          relationships: {
            other: {
              data: {
                type: "dummyrelationship",
                id: 2
              }
            }
          }
        }
      }
    });
    $.mockjax({
      url: '/dummyrelationships/2',
      responseTime: 5000,
      responseText: {
        data: {
          type: "dummyrelationship",
          id: 2,
          attributes: {
            "othername": "Other"
          }
        }
      }
    });
    $.mockjax({
      url: '/dummyrelationships',
      responseTime: 0,
      responseText: {
        data: [{
          type: "dummyrelationship",
          id: 2,
          attributes: {
            "othername": "Other"
          }
        },{
          type: "dummyrelationship",
          id: 33,
          attributes: {
            "othername": "ThirtyThree"
          }
        },{
          type: "dummyrelationship",
          id: 44,
          attributes: {
            "othername": "FourtyFour"
          }
        }]
      }
    });
  }
}

models.dummy\.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';
import { belongsTo } from 'ember-data/relationships';

export default class extends Model {
  @attr("string") name
  @belongsTo('dummyrelationship') other
}

models.dummyrelationship\.js

import Model from 'ember-data/model';
import attr from 'ember-data/attr';
//import { belongsTo, hasMany } from 'ember-data/relationships';

export default class extends Model {
  @attr("string") othername
}

templates.application\.hbs

{{ember-power-select-async-property}}

templates.components.ember-power-select-async-property\.hbs

<h1>Testing Ember Power Select</h1>
<h3>with async selected value (belongsTo relationship)</h3>

{{#if record}}
	<table>
  <tr>
  	<td>Name:</td>
    <td>{{record.name}}</td>
    <td>(immediate)</td>
  </tr>
  <tr>
  	<td>Related:</td>
    <td>{{record.other.othername}}</td>
    <td>(5s load delay)</td>
  </tr>
  <tr>
  	<td>Picker:</td>
    <td>
	{{#power-select-typeahead options=options selected=record.other onChange=(action (mut record.other)) as |thing|}}
		{{thing.othername}}
	{{/power-select-typeahead}}

    </td>
    <td>(5s load delay)</td>
  </tr>
  </table>
{{/if}}

twiddle\.json

{
  "version": "0.17.0",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "3.12.2",
    "ember-template-compiler": "3.12.2",
    "ember-testing": "3.12.2",
    "ember-power-select": "3.0.6",
    "ember-power-select-typeahead": "0.8.0",
    "jquery-mockjax": "https://cdnjs.cloudflare.com/ajax/libs/jquery-mockjax/1.6.2/jquery.mockjax.js"
  },
  "addons": {
    "@glimmer/component": "1.0.0",
    "ember-data": "3.12.5",
    "ember-power-select": "1.10.4",
    "ember-power-select-typeahead": "0.6.1"
  }
}