title: Collapse content below toolbar with CollapsingToolbarLayout
body: <p>Hello there I've been trying to use the code for collapsing toolbar in a slightly different way. Let me show you my layout</p>
  
  <pre><code>&lt;android.support.design.widget.AppBarLayout
          android:id="@+id/appBarLayout"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"&gt;
  
      &lt;android.support.design.widget.TabLayout
              android:id="@+id/tabControl"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              app:tabIndicatorHeight="4dp"
              app:tabMaxWidth="500dp"&gt;
  
      &lt;/android.support.design.widget.TabLayout&gt;
  
  
      &lt;android.support.design.widget.CollapsingToolbarLayout
              android:id="@+id/collapsingToolbarLayout"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              app:layout_scrollFlags="scroll|exitUntilCollapsed"&gt;
  
          &lt;FrameLayout
                  android:id="@+id/headerContainer"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  app:layout_collapseMode="none"/&gt;
  
      &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
  
      &lt;LinearLayout
              android:id="@+id/topLayout"
              android:layout_width="match_parent"
              android:layout_height="48dp"
              android:orientation="vertical"
              android:visibility="gone"/&gt;
  &lt;/android.support.design.widget.AppBarLayout&gt;
  
  &lt;android.support.v4.view.ViewPager
          android:id="@+id/tabContainer"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          app:layout_behavior="@string/appbar_scrolling_view_behavior"/&gt;
  </code></pre>
  
  <p>Basically I want to collapse headerContainer keeping tabControl in place. However what really happens is that headerContainer is never collapsed and remains on top the along with the tabControl.</p>
  
  <p>I have no idea why this does not work since when I put headerContainer above the tabControl the headerContainer is collapsed as it should be. </p>
  
  <p>It's just that when I put it the headerContainer below tabControl the stuff is not collapsed anymore. 
  I've tried the different solutions but none seem to work, the layout appears to be correct and it should be collapsed but it is not.</p>
  
  <p>I've been struggling with this for two days now, so any help is appreciated! Thanks!</p>