Ember-data promise proxy bug

adapters.application.js

import DS from 'ember-data';
import { Promise as EmberPromise } from 'rsvp';

export default DS.Adapter.extend({
  deleteRecord() {
    console.log('deleting', arguments);
    return EmberPromise.resolve();
  },
});

components.comp-2.js

import Ember from 'ember';

export default Ember.Component.extend({
  didUpdateAttrs() {
    this._super(...arguments);
    this.incrementProperty('counter');
  },
  counter: 0,
});

controllers.application.js

import Ember from 'ember';
import {inject as service} from '@ember/service';
import EmberObject, {computed} from '@ember/object';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  store: service(),
  
  posts: computed(function() {
    return this.store.peekAll('post');
  }),
  
  init() {
    this._super(...arguments);
    this.set('ref', EmberObject.create({something: 0}));
  },
  
  ref: null,
  
  actions: {
    updateProp() {
      this.incrementProperty('test');
    },
    updateRef() {
      let ref = this.ref;
      ref.incrementProperty('something');
      //ref.something = (ref.something || 0) + 1;
      this.notifyPropertyChange('ref');
    },
  },
});

models.post.js

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

export default Model.extend({
  name: attr('string'),
  tags: hasMany('tag'),
});

models.tag.js

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

export default Model.extend({
  name: attr('string'),
  post: belongsTo('post'),
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  model() {
    this.store.push({
      data: [
        {
          id: '1',
          type: 'tag',
          attributes: {
            name: 'tag 1',
          },
          relationships: {
            post: {
              data: {
                type: 'post',
                id: '1',
              }
            }
          },
        },
        {
          id: '2',
          type: 'tag',
          attributes: {
            name: 'tag 2',
          },
        },
        {
          id: '1',
          type: 'post',
          attributes: {
            name: 'post 1',
          },
          relationships: {
            tags: {
              data: [
                {
                  id: '1',
                  type: 'tag'
                },
              ]
            }
          }
        },
        {
          id: '2',
          type: 'post',
          attributes: {
            name: 'post 2',
          },
        },
        ]
      });
    return this.store.peekAll('tag');
  },
  
  
  actions: {
    test() {
      this.currentModel.get('firstObject')
        .belongsTo('post').value().destroyRecord();
    },
    
    test2() {
      console.log(this.store.peekAll('post').length);
    },
  },
});

templates.application.hbs

<h1>Promise proxy not changed</h1>
The second power-select does not work the first time
<br>
<br>

{{#each model as |tag|}} 
{{tag.name}}
{{#power-select renderInPlace=true selected=tag.post options=posts onchange=(action (mut tag.post)) as |p|}}
{{p.name}} 
{{/power-select}}
{{power-select-blockless renderInPlace=true selected=tag.post options=posts onchange=(action (mut tag.post)) labelPath="name"}}
<br/><br/>
{{comp-1 data=tag.post}}
<br/><br/>
{{/each}}
{{outlet}}
Non-ED: <button {{action 'updateProp'}}>Update prop</button>
{{comp-1 data=test}}<br/>
Constant reference: <button {{action 'updateRef'}}>Update ref</button>
{{comp-1 data=ref}}
{{#comp-1 data=ref as |foo|}}
, Internal value: {{foo.something}}
{{/comp-1}}
<br/>
One component deep with reference:
{{comp-2 data=ref}}
<br>
<br>

templates.components.comp-1.hbs

{{#if (has-block)}}
{{#comp-2 data=data as |foo|}}
{{yield foo}}
{{/comp-2}}
{{else}}
{{comp-2 data=data}}
{{/if}}

templates.components.comp-2.hbs

AttrChangedCount: {{counter}}
{{yield data}}

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data-classic": "3.4.0",
    "ember-power-select": "2.0.4",
    "ember-power-select-blockless": "0.5.0"
  }
}