ListView item selection on WinPhone

I have two list views contained in a scroll view:

class StadanPage : ContentPage
    {
        public StadanPage ()
        {
            Title = "Staðan";
            Icon = "home.png";

            var accountListView = new AccountListView ();
            var billListView = new BillListView ();

            var listLayout = new StackLayout {
                Children = {
                    accountListView,
                billListView,
                },
                Padding = new Thickness (10, 10, 10, 10),
                Spacing = 10,
                VerticalOptions = LayoutOptions.FillAndExpand,
                BackgroundColor = Colors.Background,
            };

            var scrollView = new ScrollView {
                BackgroundColor = listLayout.BackgroundColor,
                Content = listLayout,
            };

            Content = scrollView;
        }
    }

Both accountListView and billListView allow selecting their cells and on iPhone and Anroid it works as intended.
On WinPhone, I can only select the cells in the first listView (accountListView) inside the scroll view. If I change the order of the list views, i.e.

var listLayout = new StackLayout {
                    Children = {
                    billListView,
                    accountListView,
                    },

the same holds, i.e. I can select the cells in the billListView but not in the accountListView.

The above behaviour does not change if I remove the scroll view.

A bug?