[Android][iOS/Catalyst] Rectangle rendering is broken

[nor0x]

Description

the following code creates a Rectangle that fills the parent Grid which is not correct. On Windows it renders as expected with the correct WidthRequest

<Grid HeightRequest="100" WidthRequest="600" BackgroundColor="White">
    <Rectangle Fill="Red" WidthRequest="10" VerticalOptions="Fill" />
</Grid>

haven't tested on iOS

Steps to Reproduce

1. Create File New App
2. Add this code

<Grid HeightRequest="100" WidthRequest="600" BackgroundColor="White">
    <Rectangle Fill="Red" WidthRequest="10" VerticalOptions="Fill" />
</Grid>

check Rectangle on Android

Link to public reproduction project repository

No response

Version with bug

8.0.0-preview.1.7762

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Android, I was not able test on other platforms

Affected platform versions

Android 13

Did you find any workaround?

use BoxView

Relevant log output

No response

We've added this issue to our backlog, and we will work to address it as time and resources allow. If you have any additional information or questions about this issue, please leave a comment. For additional info about issue management, please read our Triage Process.

[drasticactions]

Happens on iOS too

[drasticactions]

https://github.com/drasticactions/MauiRepros/tree/main/MauiShapeTest

Also happens on net7.0 for Android and iOS/Catalyst, so not a regression between 7 and 8. Unless you directly set a height on the shape, it seems to always fill to its container size, unless it's the root object in the view.

e. Actually, scratch that. It seems that on Android in net7.0 it does set the width correctly. It's broken in iOS and Catalyst in all versions.

[XamlTest]

Verified this on Visual Studio Enterprise 17.9.0 Preview 2(8.0.3). Repro on Android 14.0-API34 and iOS 17.0, not repro on Windows 11 and MacCatalyst with below Project:
18628.zip