Положение второй плавающей кнопки действия не зафиксировано в макете

У меня есть макет с двумя CardViews. У каждого есть FAB внизу справа. POrtrait работает нормально, но в альбомной ориентации FAB второго CardView «отрывается» и прокручивается вместе с макетом. Знаете, где моя ошибка?

<RelativeLayout 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"
tools:context=".MainActivity">

<include
    android:id="@+id/toolbar"
    layout="@layout/toolbar" />


<android.support.design.widget.CoordinatorLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="48dp"
    android:orientation="vertical">

    <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.support.v7.widget.CardView
                android:id="@+id/cv2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/toolbar"
                android:layout_margin="20dp"
                android:layout_marginTop="50dp">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_margin="20dp"
                    android:orientation="vertical">

                    <TableLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent">

                        <TableRow>

                            <android.support.v7.widget.SwitchCompat
                                android:id="@+id/switch_persistent"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:layout_marginRight="20dp"
                                android:textOff=""
                                android:textOn="" />

                            <TextView
                                android:id="@+id/tv_persistent_title"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:text="@string/persistent_reminder"
                                android:textSize="@dimen/abc_text_size_large_material" />

                        </TableRow>
                    </TableLayout>

                    <TextView
                        android:id="@+id/textView4"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingBottom="15dp"
                        android:paddingTop="10dp"
                        android:text="@string/reminder"
                        android:textColor="@android:color/black"
                        android:textSize="@dimen/abc_text_size_large_material"
                        android:textStyle="italic" />

                </LinearLayout>
            </android.support.v7.widget.CardView>


            <android.support.v7.widget.CardView
                android:id="@+id/cv"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/toolbar"
                android:layout_margin="20dp"
                android:layout_marginTop="50dp">

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:layout_margin="20dp"
                    android:orientation="vertical">

                    <TableLayout
                        android:layout_width="match_parent"
                        android:layout_height="match_parent">

                        <TableRow>

                            <android.support.v7.widget.SwitchCompat
                                android:id="@+id/switch_startup"
                                android:layout_width="match_parent"
                                android:layout_height="wrap_content"
                                android:layout_marginRight="20dp"
                                android:textOff=""
                                android:textOn="" />

                            <TextView
                                android:id="@+id/tv_startup_title"
                                android:layout_width="wrap_content"
                                android:layout_height="wrap_content"
                                android:text="@string/startup_reminder"
                                android:textSize="@dimen/abc_text_size_large_material" />


                        </TableRow>

                    </TableLayout>


                    <TextView
                        android:id="@+id/tv_startup_text"
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:paddingBottom="15dp"
                        android:paddingTop="10dp"
                        android:text="@string/reminder"
                        android:textColor="@android:color/black"
                        android:textSize="@dimen/abc_text_size_large_material"
                        android:textStyle="italic" />

                </LinearLayout>
            </android.support.v7.widget.CardView>


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


    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab_startup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="40dp"
        android:src="@drawable/pencil"
        app:backgroundTint="@color/accentColor"
        app:borderWidth="0dp"
        app:elevation="8dp"
        app:layout_anchor="@id/cv"
        app:layout_anchorGravity="end|bottom"
        app:pressedTranslationZ="12dp"
        app:rippleColor="@android:color/white" />

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab_persistent"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginRight="40dp"
        android:src="@drawable/pencil"
        app:backgroundTint="@color/accentColor"
        app:borderWidth="0dp"
        app:elevation="8dp"
        app:layout_anchor="@id/cv2"
        app:layout_anchorGravity="end|bottom"
        app:pressedTranslationZ="12dp"
        app:rippleColor="@android:color/white" />

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