Android TextView blur is strange

Question

I blur TextView with code

    rowTitle.setText("Some");
    rowTitle2.setText("(City)");
    //rowTitle.setText("Some title");
    //rowTitle2.setText("(City)");

    radius = rowTitle.getTextSize() / 3;
    filter = new BlurMaskFilter(radius, BlurMaskFilter.Blur.NORMAL);
    rowTitle.setLayerType(View.LAYER_TYPE_HARDWARE, null);
    rowTitle.getPaint().setMaskFilter(filter);

With text "Some"

With text "Some title"

1. Why blur not all text (pic1 and pic2)?
2. Why blur second TextView (pic2)?

Answer 1

All works good if remove

<TextView
    android:textAppearance="?android:textAppearanceMedium"
/>