Fail to refresh the action text

[xcw0579]

when I using such the follow code:

Card card = new Card.Builder(this)
            .withProvider(new CardProvider())
            .setLayout(R.layout.material_image_with_buttons_card)
            .setTitle("Card number 5")
            .setDescription("Lorem ipsum dolor sit amet")
            .setDrawable(R.drawable.photo)
            .addAction(R.id.left_text_button, new TextViewAction(this)
                    .setText("Izquierda")
                    .setTextResourceColor(R.color.black_button)
                    .setListener(new OnActionClickListener() {
                        @Override
                        public void onActionClicked(View view, Card card) {
                                    TextViewAction act = (TextViewAction) card.getProvider().getAction(R.id.right_text_button);
                                    act.setText(act.getText()+"e");    // the other action text modified here 
                        }
                    }))
            .addAction(R.id.right_text_button, new TextViewAction(this)
                    .setText("Derecha")
                    .setTextResourceColor(R.color.accent_material_dark)
                    .setListener(new OnActionClickListener() {
                        @Override
                        public void onActionClicked(View view, Card card) {

                        }
                    }))
            .endConfig()
            .build();

If you try this code in your own project, you will meet a problem:
Some card cannot be updated immediately, it always happen.But it can be updated by sliding the list.

It's a bug?