PromiseProxy Service with Ember Data query

I'm trying to setup a PromiseProxy Service that returns an Ember Data model, but the result doesn't seem to set the content property.

My service looks like this:

import Ember from 'ember';

const { computed, inject, ObjectProxy, PromiseProxyMixin } = Ember;

export default ObjectProxy.extend(PromiseProxyMixin, {
  isServiceFactory: true,
  store: inject.service(),

  promise: computed({
    get() {
      var store = this.get('store');

      return store.findRecord('community', window.community.id);
    }
  })
});

I then inject this service into the following locations:

export function initialize(container, application) {
  application.inject('controller', 'community', 'service:community');
  application.inject('route', 'community', 'service:community');
  application.inject('model', 'community', 'service:community');
  application.inject('component', 'community', 'service:community');
}

export default {
  name: 'community',
  after: 'store',
  initialize: initialize
};

And then I use it as a model in my application route as a sort of deferReadiness workaround, since my whole app depends on this one model which is used throughout and expected to be there.

export default Ember.Route.extend({
  model() {
    return this.get('community');
  }
});

The issue is that it goes on to other routes, and properties on the community object are not there, i.e. content isn't set. Also community.isPending is true. The CP does get hit and the data comes back (I tested with a then in the CP).

Here is a full gist example: http://ift.tt/1Yyq963