[WinUI] StackLayout incorrectly arranges Label with 100 height instead of specified 40

[RiyashameedM]

Description

Description: CustomStackLayout derived from StackLayout is not correctly arranging its child Label. Despite explicitly setting the arrangement height to 40 in the LayoutArrangeChildren method, the Label is being rendered with a height of 100.

Steps to Reproduce

1.Run the sample.

Observed behavior - label is displayed with the height of 100.
Expected behavior - label should be displayed with the height of 40

Link to public reproduction project repository

https://github.com/RiyashameedM/LayoutIssue

Version with bug

9.0.30 SR3

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

9.0.30 SR3

Affected platforms

Windows

Affected platform versions

Windows 11

Did you find any workaround?

No

Relevant log output

[Zhanglirong-Winnie]

This issue has been verified Visual Studio 17.13 Preview 3(9.0.30 & 9.0.22). Can repro this issue on Windows platform.

[Dhivya-SF4094]

As a workaround, set the HeightRequest property explicitly and enable IsClippedToBounds for CustomStackLayout rather than returning Measured Height(40) from the Measure method. This approach maintains layout integrity without modifying the Measure and Arrange method overrides.