Action in rendered sub template not bubbled to route since upgrade to Ember2.4

I just updated my app from the latest Ember 1.13 (without any deprecations) to Ember 2.4. Now I have the problem that some actions are not bubbling anymore. I have the following setting:

routes/foo.js

export default Ember.Route.extend({
    actions:
        doSomething: function() {
            console.log("action triggered!");
        }
});

templates/foo.hbs

{{render "foo.bar"}}

templates/foo/bar.hbs

<div {{action "doSomething"}}>Test</div>

controllers/foo/bar.js

export default Ember.Controller.extend({
});

With Ember 1.13, when I clicked Test, the action doSomething in routes/foo.js was triggered. Now this does not happen anymore. If I add an action doSomething to controllers/foo/bar.js, this action is triggered, but nevertheless it does not bubble to the base root. I checked all the blog posts on new ember versions but I could find nothing that suggested the bubbling of actions was changed and how to fix it. Any help would be great!