iOS - Basic collection view elements don't render properly.

[RobTF]

Description

I have a simple collection view with an item template which shows an image with a description to the right.

The XAML for the template is;

<Border Margin="10,0,10,0">
    <Grid ColumnDefinitions="Auto,*" ColumnSpacing="10" Margin="5">
        <Image Source="template.png" WidthRequest="36" />
        <Label Grid.Column="1" Text="{Binding Name}" VerticalOptions="Center" />
    </Grid>
</Border>

On Android it works fine as per below;

However, on iOS it seems to have problems with vertical sizing.

Steps to Reproduce

1. Build attached repro case.
2. Run on iOS
3. Tap "Go to test page"
4. Observe issue.

Link to public reproduction project repository

https://github.com/RobTF/mauiplay/tree/master/CollectionViewIssue

Version with bug

7.0.86

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iOS 16.4

Did you find any workaround?

If the item height is known ahead of time, a HeightRequest can be added as a hack, but this is problematic as in a lot of cases the item should just be the size of the content, so varying font sizes, or data which is dynamically bound make this very difficult or impossible.

Relevant log output

No response

[XamlTest]

Verified this on Visual Studio Enterprise 17.7.0 Preview 3.0. Repro on iOS 16.4 .NET 8, and Android 13.0-API33 also has render issue with below Project:
CollectionViewIssue.zip

iOS:

Android:

[davidortinau]

Tested with .NET 8 Preview 7.

Set HeightRequest on the Image:

Android Border default background color seems to be the black. Setting the default style to transparent resolves this:

Resources/Styles.xaml

<Style TargetType="Border">
        <Setter Property="Stroke" Value="{AppThemeBinding Light={StaticResource Gray200}, Dark={StaticResource Gray500}}" />
        <Setter Property="StrokeShape" Value="Rectangle"/>
        <Setter Property="StrokeThickness" Value="1"/>
        <Setter Property="Background" Value="Transparent"/>
    </Style>

@PureWeen @rachelkang should we update the default styles RD, or is there a backing default that is incorrect on Android? I'm pretty sure there are other issues on the black background Android issue, but I didn't spot it quickly.