MAUI BUG #15076

ScrollView in Grid cell multiple issues on iOS, Android and WinUI.

Grid with RowDefinitions="*,*" where each grid cell contains a ScrollView ...

Scenario 1:

<Grid RowDefinitions="*,*">
    <ScrollView Grid.Row="0" >
        <Rectangle HeightRequest="500" BackgroundColor="Blue"/>
    </ScrollView>
    <ScrollView Grid.Row="1" >
        <Rectangle  HeightRequest="500" BackgroundColor="Yellow" />
    </ScrollView>
</Grid>

1. Android: The Grid cells are 50/50 and the Rectangle can be scrolled within the ScrollView. (Pixel 5, Emulator)
2. iOS: [BUG] The Grid cells expand to fit the Rectangle, i.e. they are too big. (iPhone SE, simulator)
3. Windows: [BUG] The Grid cells appear to be the correct height but the Rectangles are minimal height.

Image 1.1

Image 1.2

Image 1.3

Scenario 2:

<Grid RowDefinitions="*,*">
    <ScrollView Grid.Row="0" >
        <Button Text="A Button in a ScrollView" HeightRequest="500" BackgroundColor="Blue"/>
    </ScrollView>
    <ScrollView Grid.Row="1" >
        <Button Text="A Button in a ScrollView" HeightRequest="500" TextColor="Blue" BackgroundColor="Yellow" />
    </ScrollView>
</Grid>

1. Android: The Grid cells are 50/50 and the Buttons can be scrolled within the ScrollView.
   1. Android: [BUG] If this text has InputTransparent=True, it does not show.
2. iOS: [BUG] The Grid cells expand to fit the Button, i.e.they are too big. (iPhone SE, simulator)
3. Windows: [BUG] The Grid is 50/50, the Button is 500 in height, but the ScrollView is not scrollable.

Image 2.1

Image 2.2

Image 2.3