XAML 为什么Maui AbsoluteLayout在StackLayout中不显示内容

我在使用AbsoluteLayout时遇到了一个.NET Maui应用程序的问题，页面上什么都没有显示。我只得到了一个空白页面。
代码如下所示。
需要注意的是，最上面的StackLayout来自母版页，所以我不能删除它。但是，问题出现在下面的代码中。
谢谢
<StackLayout  HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" >

        <AbsoluteLayout  HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
            <ScrollView HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" AbsoluteLayout.LayoutBounds="0,0,AutoSize, AutoSize" AbsoluteLayout.LayoutFlags="All">
                <VerticalStackLayout HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="Welcome to .NET MAUI!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                    <Label  Text="More labels!" VerticalOptions="Start"  HorizontalOptions="Start" />
                </VerticalStackLayout>
            </ScrollView>
        </AbsoluteLayout>

    </StackLayout>
XAML 为什么Maui AbsoluteLayout在StackLayout中不显示内容

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