I have some content inside of a `NestedScrollView` that is not showing up. The only things that do display are the contents of the `AppBarLayout`. However, when I replace the `NestedScrollView` with a fragment containing a `RecyclerView`, it displays as expected. I can't seem to figure out what I'm doing wrong here. 

EDIT: I just tested that if I remove the `AppBarLayout` entirely and also the `app:layout_behavior="@string/appbar_scrolling_view_behavior"` property on the `NestedScrollView`, the Preview pane in Android Studio does display my scrolling content.

```
<android.support.design.widget.CoordinatorLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:app="http://schemas.android.com/apk/res-auto"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:fitsSystemWindows="true">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:fitsSystemWindows="true"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <!-- Extended toolbar -->
        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical"
            android:minHeight="?attr/actionBarSize"
            app:layout_collapseMode="pin">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"/>

            <android.support.design.widget.TextInputLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:minHeight="72dp">

                <EditText
                    android:id="@+id/name"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:inputType="textCapSentences|textMultiLine"
                    android:hint="Name"/>

            </android.support.design.widget.TextInputLayout>

        </LinearLayout>

    </android.support.design.widget.CollapsingToolbarLayout>

</android.support.design.widget.AppBarLayout>

<android.support.v4.widget.NestedScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:visibility="visible">

        <!-- Scrolling content here -->

    </LinearLayout>

</android.support.v4.widget.NestedScrollView>

</android.support.design.widget.CoordinatorLayout>

```