realm-java: RealmChangeListener onChange() method is not triggered

Goal

In Android, I am trying to update different views - such as ViewHolder in RecyclerView and a bunch of other custom views - that contain different instances of the logically-same object using a RealmChangeListener.

This is the object class:

public class Post extends RealmObject {
    ...
}

I am currently using the FastAdapter library so I have this PostItem class which is basically the item that is going to be stored inside the adapter and provides the logic to bind to a ViewHolder:

public class PostItem extends AbstractItem<PostItem, PostItem.ViewHolder> {
    private Post mPost;
    private RealmChangeListener mRealmChangeListener;
    ...
    public PostItem withPost(Post post) {
        mPost = post;
        mRealmChangeListener = new RealmChangeListener() {
            @Override
            public void onChange() {
                // here I call a custom listener which should then update the Recycler 
                // of which it is responsible - something like:
                // myCustomListener.onRealmChange(PostItem.this, mPost)
            }
        };
        mPost.removeChangeListeners();
        mPost.addChangeListener(mRealmChangeListener);
    }
    ...
}

The user can then make some action such as liking or saving the post. Each time I am making a request to the server and upon success I take the object coming back in the responde and update it in the database in this way:

public class LikePostTask extends AsyncTask<Void, Void, Post> {
    ...
    @Override
    protected void onPostExecute(Post post) {
        DomainController.getInstance().save(post);
    }
}

public class DomainController {
    ...
    public <T extends RealmObject> T save(final T object) {
        Realm realm = Realm.getDefaultInstance();
        realm.beginTransaction();
        T realmObject = realm.copyToRealmOrUpdate(object);
        realm.commitTransaction();
        return realmObject;
    }
}

Expected Results

If I understand it correctly after the save() method is executed the onChange() method of the RealmChangeListener should be called upon the next iteration of the run loop on the UI thread.

Actual Results

However the onChange() method is not triggered. I tried putting a breakpoint inside it and it’s never reached.

The thing is the objects instances inside the PostItem objects are updated. After scrolling to force a rebind of the ViewHolder the UI is updated with the right information but again whatever I put inside the onChange() method is never executed.

Version of Realm and tooling

Realm version(s): 0.88.2

Android Studio version: 2.1 preview 5

Which Android version and device: 6.0.1 on a Galaxy S6