.NET MAUI: There is an "Invalid color" error on iOS when drawing a pattern using the GraphicsView

[Kurt427]

Description

Please see Microsoft Q&A question ".NET MAUI: Why do I get an "Invalid color" error when drawing a pattern using the GraphicsView?" for details, including how to reproduce:

https://learn.microsoft.com/en-us/answers/questions/1691027/net-maui-why-do-i-get-an-invalid-color-error-when?page=1#answer-1537415

Leon Lu (Shanghai Wicresoft Co,.Ltd.) answered the question and suggested that I should report the issue to the MAUI GitHub.

Steps to Reproduce

1. Build Debug version the project for an iOS simulator.
2. Set a breakpoint at line 28 of MainPage.xaml.cs
3. Run the project.
4. When the breakpoint is hit, clear the Output window.
5. Continue execution. You will see an "Invalid color" error in the Output window like the one seen under Relevant log output.

Link to public reproduction project repository

https://github.com/Kurt427/MauiGraphicsPatternTest

Version with bug

8.0.21 SR4.1

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

2024-06-06 10:35:51.033249-0700 TmMobile[3045:38068] [Unknown process name] Invalid color: colored pattern specified with uncolored pattern color space.

[github-actions]

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[dotnet-policy-service]

Hi @Kurt427. We have added the "s/needs-repro" label to this issue, which indicates that we require steps and sample code to reproduce the issue before we can take further action. Please try to create a minimal sample project/solution or code samples which reproduce the issue, ideally as a GitHub repo that we can clone. See more details about creating repros here: https://github.com/dotnet/maui/blob/main/.github/repro.md

This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[kevinxufei]

Verified this issue with Visual Studio 17.11.0 Preview 2(8.0.40 & 8.0.21 & 8.0.14). Can repro it with sample project.