[Android] Button with shadow broken on Android device

[Victor-Porter]

Description

When I add a shadow to a button on an Android device, several things happen:

1. The shadow does not apply well to a button with rounded borders. [Tracked here: [Android] Button with corner radius shadow broken on Android device #20596]
2. The color of the Brush property of the Shadow does not recognize the transparency value in #AARRGGBB format. According to its documentation it is a valid format. iOS and Windows recognise this format.
3. The shadow has a solid color.

I attach an image with the errors:

This happens only on Android, on Windows and iOS, it works fine.

Steps to Reproduce

1. Create a new MAUI project.
2. Add a button with rounded borders, shadow, and a brush color with transparency.

<Button
    CornerRadius="8"
    Text="Button without transparency [#000000]">
    <Button.Shadow>
        <Shadow Brush="#000000"
                Offset="0,4"
                Radius="4" />
    </Button.Shadow>
</Button>

<Button
    CornerRadius="8"
    Text="Button with 35% of transparency [#59000000]">
    <Button.Shadow>
        <Shadow Brush="#59000000"
                Offset="0,4"
                Radius="4" />
    </Button.Shadow>
</Button>

4. Launch the application and see the error.

Link to public reproduction project repository

Maui.App.Shadow.zip

Version with bug

9.0.60 SR6

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

9.0.30 SR3

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No response

[similar-issues-ai]

We've found some similar issues:

• [Android] Button with corner radius shadow broken on Android device #20596 , similarity score: 86%
• Incorrect/Cut off shadows #15924 , similarity score: 84%
• Shadow on button causes faulty line break behaviour #27006 , similarity score: 83%
• Shadow does not work as expected on Android vs Windows  #13688 , similarity score: 81%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

Note: You can give me feedback by 👍 or 👎 this comment.

[deepika2509]

This issue has been verified in Visual Studio Code 1.99.3 with MAUI versions (9.0.60, 9.0.50 & 9.0.40). It can be reproduced on Android platforms. The issue is not reproducible in earlier MAUI versions such as 9.0.30 & 9.0.0.

[YZahringer]

Could be a regression by #26768