title: No ripple on second floating action button in same layout
body: <p>I have two floating action buttons in one layout file, but only the last one gets the ripple effect applied. If I place them opposite, then it's also the last one getting the ripple. So no matter how they are placed in the layout file, the last one gets a ripple effect on touch and the other does not.
  How can this be? Are there any solution to getting the ripple effect on both FABs?</p>
  
  <pre><code>&lt;android.support.design.widget.FloatingActionButton
      android:id="@+id/fab_report"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom|right"
      android:layout_margin="16dp"
      android:clickable="true"
      android:src="@drawable/ic_fab_run"
      android:elevation="8dp"
      app:backgroundTint="@color/primary"
      app:rippleColor="@color/blue" /&gt;
  &lt;android.support.design.widget.FloatingActionButton
      android:id="@+id/fab_run"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="bottom|right"
      android:layout_margin="16dp"
      android:clickable="true"
      android:src="@drawable/ic_fab_run"
      android:elevation="8dp"
      app:backgroundTint="@color/primary"
      app:rippleColor="@color/blue" /&gt;
  </code></pre>
  
  <p>TL;DR: Only the last one FAB in the layout gets the ripple effect, how to solve this?</p>