title: CollapsingToolbarLayout doesn't work well with NestedScrollView
body: <p>I made an activity where image should collapse with toolbar and only text below would be visible. But When Toolbar being collapsed, there shows up a large gap between Toolbar and NestedScrollView</p>
  
  <pre><code>&lt;android.support.design.widget.CoordinatorLayout xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:id="@+id/coordinatorLayout"
      android:layout_width="match_parent"
      android:background="@color/white"
      android:layout_height="match_parent"&gt;
  
      &lt;android.support.design.widget.AppBarLayout
          android:id="@+id/appBarLayout"
          android:layout_width="match_parent"
          app:elevation="5dp"
          app:layout_collapseMode="pin"
          android:fitsSystemWindows="true"
          android:layout_height="wrap_content"&gt;
  
          &lt;android.support.design.widget.CollapsingToolbarLayout
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              app:toolbarId="@+id/toolbar"
              android:id="@+id/collapsing"
              android:fitsSystemWindows="true"
              app:contentScrim="?attr/colorPrimary"
              app:layout_scrollFlags="scroll|exitUntilCollapsed"&gt;
  
              &lt;com.noframe.farmisagronom.util.ResizibleImageView
                  android:id="@+id/image_view"
                  android:layout_width="match_parent"
                  android:layout_height="wrap_content"
                  app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
                  android:minHeight="100dp"
                  android:maxHeight="400dp"
                  android:fitsSystemWindows="true"
                  app:layout_collapseMode="parallax"
                  app:layout_collapseParallaxMultiplier="0.5"
                  android:scaleType="centerCrop"/&gt;
  
              &lt;android.support.v7.widget.Toolbar
                  android:id="@+id/toolbar"
                  android:layout_width="match_parent"
                  android:layout_height="?attr/actionBarSize"
                  android:popupTheme="@style/ThemeOverlay.AppCompat.Light"
                  android:minHeight="?attr/actionBarSize"
                  app:layout_collapseMode="pin"
                  /&gt;
  
          &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
      &lt;/android.support.design.widget.AppBarLayout&gt;
      &lt;android.support.v4.widget.NestedScrollView
          android:id="@+id/nesteview"
          app:layout_anchorGravity="top"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
           .....
      &lt;/android.support.v4.widget.NestedScrollView&gt;
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>And this activity looks really good. 
  <img src="https://i.stack.imgur.com/bSPR0.png" alt="enter image description here"></p>
  
  <p>But when i scroll up the NestedScrollView this goes out of control. 
  <img src="https://i.stack.imgur.com/Kqubr.png" alt="enter image description here"></p>
  
  <p>This little space between toolbar and text is getting on my nerves. </p>
  
  <p><strong>note that if there is large text in NestedScrollView problem won't show up, but if NestedScrollView + collapsed tool bar doesn't take all phone screen, then there is a gap between them.</strong> </p>