isDirty not triggered by change in Ember.Select

I’m experiencing issues using an Ember.Select view to set an associated record, in this case ‘status’. I’m relying on the model’s isDirty flag to enable and disable a save button; however, it is not updating when the associated record has changed.

Example: JS Bin - Collaborative JavaScript Debugging

From what I have read, it seems to be the case because the current workaround for using Ember.Select is to set selection=<model>.content, which prevents isDirty from changing.

Does anyone know of a workaround to enable this behavior?

If you’re using belongs to see below: