title: Nested recyclerviews inside nestedscrollview
body: <p>I'm trying to implement nested <code>RecyclerView</code>. I did that but parent <code>RecyclerView</code> scroll was not smooth on scroll. I did alot of optimization, but still didn't manage to be successful with scroll till I though of putting parent recyclerview inside <code>NestedScrollView</code>. Scroll is flawless now, but I've a problem. </p>
  
  <p><strong>If I scroll (even tiny bit) my inner <code>RecyclerView</code> (horizontal), I immediately get back to the start [of vertical recyclerview - parent]</strong>.</p>
  
  <p>This happens one time. Why is that and is it possible to fix it?</p>
  
  <pre><code>&lt;android.support.v4.widget.NestedScrollView
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fillViewport="true"&gt;
  
      &lt;android.support.v7.widget.RecyclerView
          android:id="@+id/parent_rv"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          app:layout_constraintBottom_toBottomOf="parent"
          app:layout_constraintEnd_toEndOf="parent"
          app:layout_constraintStart_toStartOf="parent"
          app:layout_constraintTop_toTopOf="parent"&gt;
  
      &lt;/android.support.v7.widget.RecyclerView&gt;
  
  &lt;/android.support.v4.widget.NestedScrollView&gt;
  </code></pre>