Flexlayout does not work with scrollable like xamarin list, scrolabble v

Description

ListView and Scrollable views can`t scroll to bottom when they are inside the flexlayout

Steps to Reproduce

Just only put ListView, scrollable view etc. into FlexLayout

Expected Behavior

When I scroll down to the end of the list all items should be visible. It is not possible to see all elements , some of them are cut.

Actual Behavior

I can scroll down to the end of the list and all items are visible.

Basic Information

• Version with issue:
  • iOS: 12.0 Simulator
  • Android: 8.1 simulator
  • UWP windows 10

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="Module1.Views.MainPage"
             Title="{Binding Title}">

    <StackLayout HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand">
        <Label Text="Welcome to Xamarin Forms and Prism!" />


        <FlexLayout>
            <ListView>
                <ListView.ItemsSource>
                    <x:Array Type="{x:Type x:String}">
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>mono</x:String>
                        <x:String>monodroid</x:String>
                        <x:String>monotouch</x:String>
                        <x:String>monorail</x:String>
                        <x:String>monodevelop</x:String>
                        <x:String>monotone</x:String>
                        <x:String>monopoly</x:String>
                        <x:String>monomodal</x:String>
                        <x:String>mononucleosis</x:String>
                        <x:String>1</x:String>
                        <x:String>2</x:String>
                        <x:String>3</x:String>
                        <x:String>4</x:String>
                        <x:String>55</x:String>
                        <x:String>6</x:String>
                        <x:String>7</x:String>
                        <x:String>8</x:String>
                        <x:String>9</x:String>
                    </x:Array>
                </ListView.ItemsSource>
            </ListView>
        </FlexLayout>

    </StackLayout>

</ContentPage>

Module1.zip