query redirects broken on beforeModel

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  queryParams: 'timeframe',
  timeframe: null
});

routes.application.js

import Ember from 'ember';

export default Ember.Route.extend({
  beforeModel(transition) {
    if (!transition.state.queryParams.timeframe) {
      this.replaceWith({ queryParams: { timeframe: '24hrs' } });
    }
  }
});

templates.application.hbs

<h1>Query timeframe: {{timeframe}}</h1>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "canary",
    "ember-data": "canary",
    "ember-template-compiler": "canary",
    "ember-testing": "canary"
  },
  "addons": {}
}