title: Android Constraint Layout Renderproblems in NestedScrollView
body: <p>I´am trying to add my ConstraintLayout to a NestedScrollView.
  When spectating my ContraintLayout everything looks fine.</p>
  
  <p>But then including the layout to my NestedScrollView the collapses the ContraintLayout.(Even though I use match parent width/heigt on the include and in my CL)</p>
  
  <p>This actually was a bug in a previous Version of the ContraintLayout (~pre Beta).<a href="https://code.google.com/p/android/issues/detail?id=212141" rel="nofollow noreferrer">Google Bug Reports</a></p>
  
  <p>I´am following this approach with Verion beta4.<a href="https://www.youtube.com/watch?v=XamMbnzI5vE" rel="nofollow noreferrer">Link to Youtube AndroidDev Channel</a></p>
  
  <p>constraint_layout.xml:</p>
  
  <pre><code>&lt;android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/coordinator_layout"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"
      tools:context="de.project.andy.aliver.JobCreatorActivity"&gt;
  
      &lt;include layout="@layout/content_job_creator" /&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/app_bar"
          android:layout_width="match_parent"
          android:layout_height="145dp"
          android:fitsSystemWindows="true"
          android:theme="@style/AppTheme.AppBarOverlay"&gt;
  
          &lt;android.support.design.widget.CollapsingToolbarLayout
              android:id="@+id/toolbar_layout"
              android:layout_width="match_parent"
              android:layout_height="143dp"
              android:fitsSystemWindows="true"
              app:contentScrim="?attr/colorPrimary"
              app:layout_scrollFlags="scroll|exitUntilCollapsed"&gt;
  
              &lt;android.support.v7.widget.Toolbar
                  android:id="@+id/toolbar"
                  android:layout_width="match_parent"
                  android:layout_height="?attr/actionBarSize"
                  app:layout_collapseMode="pin"
                  app:popupTheme="@style/AppTheme.PopupOverlay" /&gt;
  
          &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
      &lt;android.support.design.widget.FloatingActionButton
          android:id="@+id/jc_fab"
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:src="@android:drawable/arrow_up_float"
          android:layout_gravity="end|bottom"
          app:fabSize="normal"
          android:layout_margin="15dp" /&gt;
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>nested_scrollview_layout.xml:</p>
  
  <pre><code>&lt;android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      app:layout_behavior="@string/appbar_scrolling_view_behavior"
      tools:context="de.project.andy.aliver.JobCreatorActivity"
      tools:showIn="@layout/activity_job_creator"&gt;
  
      &lt;include layout="@layout/constraint_layout"
          android:layout_width="match_parent"
          android:layout_height="match_parent" /&gt;
  &lt;/android.support.v4.widget.NestedScrollView&gt;
  </code></pre>
  
  <p>Is there a workaround?</p>