title: Nested scrollview doesnt take available space in CoordinatorLayout
body: <p>I am facing a problem regarding implementing a <code>NestedScrollview</code> inside a <code>CoordinatorLayout</code>. See the following layout code:</p>
  
  <pre><code>&lt;android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      xmlns:card_view="http://schemas.android.com/tools"&gt;
  
  &lt;android.support.design.widget.AppBarLayout
      android:id="@+id/app_bar_layout"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      app:expanded="true"
      android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
      android:fitsSystemWindows="true"&gt;
  
      &lt;android.support.design.widget.CollapsingToolbarLayout
          android:id="@+id/collapsing_toolbar_layout"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          app:layout_scrollFlags="scroll|exitUntilCollapsed"&gt;
  
          &lt;LinearLayout
              android:layout_marginTop="?android:attr/actionBarSize"
              app:layout_collapseMode="parallax"
              android:layout_width="match_parent"
              android:weightSum="2"
              android:orientation="horizontal"
              android:gravity="bottom"
              android:fitsSystemWindows="true"
              android:background="@color/aop_gray"
              android:layout_height="87dp"&gt;
  
              &lt;LinearLayout
                  android:background="#E5E5E5"
                  android:layout_width="0dp"
                  android:layout_weight="1"
                  android:layout_height="match_parent"&gt;
  
              &lt;/LinearLayout&gt;
  
              &lt;LinearLayout
                  android:layout_width="0dp"
                  android:layout_weight="1"
                  android:layout_height="match_parent"&gt;
              &lt;/LinearLayout&gt;
  
          &lt;/LinearLayout&gt;
  
          &lt;android.support.v7.widget.Toolbar
              android:id="@+id/toolbar_anders"
              android:layout_width="match_parent"
              android:layout_height="?attr/actionBarSize"
              android:background="@color/Custom_red"
              style="@style/CustomTheme.CustomActionBar"
              android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
              /&gt;
          &lt;/android.support.design.widget.CollapsingToolbarLayout&gt;
      &lt;/android.support.design.widget.AppBarLayout&gt;
  
      &lt;android.support.v4.widget.NestedScrollView
          android:id="@+id/scroll"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:clipToPadding="false"
          android:paddingTop="@dimen/activity_horizontal_margin"
          android:paddingBottom="@dimen/activity_horizontal_margin"
          app:layout_behavior="@string/appbar_scrolling_view_behavior"&gt;
  
          &lt;LinearLayout
              android:id="@+id/test1"
              android:layout_gravity="fill_vertical"
              android:layout_width="match_parent"
              android:orientation="vertical"
              android:layout_height="match_parent"&gt;
  
              &lt;com.Custom.saving.widgets.CustomTextView
                  android:id="@+id/aop_data_overview_form_header"
                  android:gravity="center"
                  android:layout_width="wrap_content"
                  android:layout_height="match_parent"
                  android:paddingRight="@dimen/activity_horizontal_margin"
                  android:paddingLeft="@dimen/activity_horizontal_margin"
                  style="@style/AopHeader"
                  android:layout_marginBottom="@dimen/default_margin"
                  android:text="@string/is_your_data_correct_header" /&gt;
  
              &lt;com.Custom.saving.widgets.CustomTextView
                  android:layout_marginTop="@dimen/default_margin"
                  android:paddingRight="@dimen/activity_horizontal_margin"
                  android:paddingLeft="@dimen/activity_horizontal_margin"
                  android:layout_height="wrap_content"
                  android:layout_width="wrap_content"
                  style="@style/TextViewGray"
                  android:textColor="#787878"
                  android:text="@string/aop_form_header"/&gt;
  
              &lt;com.Custom.saving.widgets.CustomTextView
                  android:layout_marginTop="@dimen/default_margin"
                  android:paddingRight="@dimen/activity_horizontal_margin"
                  android:paddingLeft="@dimen/activity_horizontal_margin"
                  android:layout_width="wrap_content"
                  style="@style/AopBlueParagraph"
                  android:text="@string/aop_identity_data"
                  android:layout_height="wrap_content"/&gt;
  
              &lt;android.support.v7.widget.CardView
                  android:id="@+id/card_view2"
                  android:layout_width="match_parent"
                  android:layout_marginTop="@dimen/activity_vertical_margin"
                  card_view:cardElevation="5dp"
                  android:background="@color/white"
                  android:gravity="center_horizontal"
                  card_view:cardCornerRadius="4dp"
                  android:layout_height="wrap_content"&gt;
  
                  &lt;LinearLayout
                      style="@style/ActivityContent"
                      android:paddingBottom="@dimen/activity_vertical_margin"
                      android:layout_width="match_parent"
                      android:layout_height="wrap_content"
                      android:gravity="center_horizontal"
                      android:orientation="vertical"&gt;
  
                      &lt;RadioGroup
                          android:layout_width="wrap_content"
                          android:layout_gravity="left"
                          android:orientation="horizontal"
                          android:layout_height="wrap_content"&gt;
  
                          &lt;RadioButton
                              android:layout_width="wrap_content"
                              android:layout_marginRight="@dimen/default_margin"
                              android:layout_height="wrap_content"
                              android:text="Man"/&gt;
  
                          &lt;RadioButton
                              android:layout_width="wrap_content"
                              android:layout_height="wrap_content"
                              android:text="Vrouw"/&gt;
  
                      &lt;/RadioGroup&gt;
  
  
                      &lt;android.support.design.widget.TextInputLayout
                          android:layout_width="match_parent"
                          android:layout_marginTop="@dimen/small_margin"
                          app:hintTextAppearance="@style/TextInputLayoutStyle"
                          android:layout_height="wrap_content"&gt;
  
                          &lt;com.Custom.saving.widgets.CustomEditText
                              style="@style/Input"
                              android:layout_marginTop="@dimen/small_margin"
                              android:layout_width="match_parent"
                              android:layout_height="wrap_content"
                              android:hint="Voornaam"/&gt;
  
                      &lt;/android.support.design.widget.TextInputLayout&gt;
  
                      &lt;android.support.design.widget.TextInputLayout
                          android:layout_width="match_parent"
                          app:hintTextAppearance="@style/TextInputLayoutStyle"
                          android:layout_marginTop="@dimen/small_margin"
                          android:layout_height="wrap_content"&gt;
  
                          &lt;com.Custom.saving.widgets.CustomEditText
                              style="@style/Input"
                              android:layout_marginTop="@dimen/small_margin"
                              android:layout_width="match_parent"
                              android:layout_height="wrap_content"
                              android:hint="Achternaam"/&gt;
  
                      &lt;/android.support.design.widget.TextInputLayout&gt;
  
                      &lt;android.support.design.widget.TextInputLayout
                          android:layout_width="match_parent"
                          app:hintTextAppearance="@style/TextInputLayoutStyle"
                          android:layout_marginTop="@dimen/small_margin"
                          android:layout_height="wrap_content"&gt;
  
                          &lt;com.Custom.saving.widgets.CustomEditText
                              style="@style/Input"
                              android:layout_marginTop="@dimen/small_margin"
                              android:layout_width="match_parent"
                              android:layout_height="wrap_content"
                              android:hint="Achternaam"/&gt;
  
                      &lt;/android.support.design.widget.TextInputLayout&gt;
  
                      &lt;android.support.design.widget.TextInputLayout
                          android:layout_width="match_parent"
                          app:hintTextAppearance="@style/TextInputLayoutStyle"
                          android:layout_marginTop="@dimen/small_margin"
                          android:layout_height="wrap_content"&gt;
  
                          &lt;com.Custom.saving.widgets.CustomEditText
                              style="@style/Input"
                              android:layout_marginTop="@dimen/small_margin"
                              android:layout_width="match_parent"
                              android:layout_height="wrap_content"
                              android:hint="Achternaam"/&gt;
  
                      &lt;/android.support.design.widget.TextInputLayout&gt;
              &lt;/LinearLayout&gt;
          &lt;/android.support.v7.widget.CardView&gt;
  
  
          &lt;com.Custom.saving.widgets.CustomTextView
              android:layout_marginTop="@dimen/default_margin"
              android:paddingRight="@dimen/activity_horizontal_margin"
              android:paddingLeft="@dimen/activity_horizontal_margin"
              android:layout_width="wrap_content"
              style="@style/AopBlueParagraph"
              android:text="@string/aop_identity_data"
              android:layout_height="wrap_content"/&gt;
      &lt;/LinearLayout&gt;
  &lt;/android.support.v4.widget.NestedScrollView&gt;
  &lt;/android.support.design.widget.CoordinatorLayout&gt;
  </code></pre>
  
  <p>So basically I got a bar thats sticking on the top of the screen when the user scrolls through the content. Which is a form consisting of cards with input elements. The toolbar makes way for that bar on scroll.</p>
  
  <p>The problem is that the NestedScrollview doesn't take the full height and leaves a big margin on the bottom. While the content is still scrollable in a smaller view. Sometimes it does expand but then all of a sudden gets back a margin again as soon as i start editing text in an EditText. </p>