RecyclerView inside ScrollView is not working

I’m trying to implement a layout which contains RecyclerView and ScrollView at the same layout.

Layout template:

<RelativeLayout>
    <ScrollView android:id="@+id/myScrollView">
       <unrelated data>...</unrealated data>

           <android.support.v7.widget.RecyclerView
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:id="@+id/my_recycler_view"
            />
    </ScrollView>


</RelativeLayout>

Problems: i can scroll until the last element of ScrollView

Things i tried:

1. card view inside the ScrollView (now ScrollView contains RecyclerView) – can see the card up until the RecyclerView
2. initial thought was to implement this viewGroup using RecyclerView instead of ScrollView where one of it’s views type is the CardView but i got the exact same results as with the ScrollView