ListView does not render immediately in Android

I have a button on a page which when clicked calls a method which does

return new NavigationPage(new StadanPage())

This StadanPage constructor, whose class inherits from ContentPage, looks like this:

public StadanPage()
{
Title = "Staðan";

        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.BackgroundColor,
        };

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

        Content = scrollView;
    }

I have no problem on an iOS device, but on Android (Google Galaxy Nexus) the scrollView (the two list views) do not render unless I rotate the device.
Note that removing the scrollView (setting the Content of the StadanPage equal to listLayout) does not change this behaviour.

Any ideas what is going on here?