ScrollView doesn't work properly on Android.

Description

When I wrap a ScrollView around a VerticalStackLayout in Android specifically, or any other control really, if the controls exceed the viewing area, it’s not possible to scroll, and everything is simply truncated. https://i.imgur.com/fwfnTfi.png This same project works completely fine on Windows, though, and scrolling works perfectly. Here is the xaml:

<ScrollView>
        <VerticalStackLayout 
            Spacing="16" 
            Padding="30,30" 
            VerticalOptions="Start">

            <Label
                x:Name="titleLabel"
                FontSize="32"
                FontFamily=""
                FontAttributes="Bold"
                Text="Loading..." />

            <Label
                x:Name="descriptionLabel"
                FontSize="18"
                FontFamily=""
                FontAttributes="None"
                Text="Loading..." />

            <Image
                x:Name="apodImage"
                Margin="0, 30"
                Source="loading.png"
                HeightRequest="200"
                Aspect="AspectFit" />

            <Button
                x:Name="refreshButton"
                IsEnabled="False"
                Text="Refresh" 
                Clicked="refreshButton_Clicked" />

            <Button
                x:Name="shareButton"
                IsEnabled="False"
                Text="Share" 
                Clicked="shareButton_Clicked" />

        </VerticalStackLayout>
    </ScrollView>

Thanks for your time!

(Top part of the code which keeps getting cut off):

Steps to Reproduce

1. Create a new .NET MAUI project.
2. In the default VerticalStackLayout, add some controls and then change their initial size at runtime.
3. Run the project on Android.

Version with bug

6.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

All Android versions

Did you find any workaround?

edit see: https://github.com/dotnet/maui/issues/7590#issuecomment-1164968260

Relevant log output

No response

[fyndor]

This is my workaround for now. Every time I do something in my ViewModel that I know should affect the vertical height of the page, I call an Action that I assign to this method. By setting the Content property to null, and then back to it’s value as defined in XAML, it recalculates it’s size and works properly.

private void NotifyScrollChanged()
{
    var content = ScrollViewCtrl.Content;
    ScrollViewCtrl.Content = null;
    ScrollViewCtrl.Content = content;
}

[Dan-Banfield]

same here, scrolling doesnt work when we have verticalstacklayout inside scrollView. On android doesnt work at all, on Windows works ok. One thing when I populate data during initialization in constructor scrolling works properly so it seems that the problems is in “resizing” layout after initialization

Yup. Exactly the same here. A really big problem actually; I don’t even know how this went unnoticed?