Yielded Block Spacing Issues

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: ''
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  items: [
    'bananas',
    'apples',
    'oranges'
  ]
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
My favorite foods are
{{#my-component items=items as |item|}}
  {{item}}
{{/my-component}}
and a bowl of soup. (Note the awkward spaces between the items and the commas.)
<br>
<br>
My favorite foods are
{{#my-component items=items as |item|}}
  {{~item~}}
{{/my-component}}
and a bowl of soup. (This works, but I don't feel like I should have to use <code>~</code> here.)

templates.components.my-component.hbs

{{#each items as |item|}}
  {{yield item}},
{{/each}}

twiddle.json

{
  "version": "0.7.2",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.4/ember-template-compiler.js"
  }
}