CollapsingToolbarLayout pushes NestedScrollView down in android

Question

I encountered a problem on first launch of a fragment. It seems like CoordinatorLayout adds a negative margin to NestedScrollView which is equal to CollapsingToolbarLayout\'

Answer 1

Adding minHeight attribute prevents CollapsingToolbarLayout from unexpected behavior:

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay"
    android:stateListAnimator="@animator/appbar_always_elevated">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/toolbarLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        android:minHeight="@dimen/player_toolbar_height"
        app:layout_scrollFlags="scroll|exitUntilCollapsed"
        app:titleEnabled="false">

        <include layout="@layout/player_view"/>

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="@dimen/player_toolbar_height"
            app:layout_collapseMode="none"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

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

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