[Android] ItemSizingStrategy="MeasureFirstItem" does not work correctly with VerticalGrid and grouped ItemsSource

[NafeelaNazhir]

Description

When using a CollectionView with ItemSizingStrategy="MeasureFirstItem" in a VerticalGrid layout for grouped lists, items with long content in the first span do not properly wrap or align. This causes the content to overlap with other items in the grid, leading to layout issues.

Screen.Recording.2025-04-25.at.11.54.31.AM.mov

Steps to Reproduce

1. Run the attached sample ItemSizingStrategySample 2.zip
2. Select ItemsLayout as Vertical Grid, ItemSource as grouped list and ItemSizingStrategy as MeasureFirstItem.
3. Observe that Items with long content in the first span do not properly wrap or align. This causes the content to overlap with other items in the grid, leading to layout issues.

Expected Behavior: The CollectionView should size all items in the grid based on the size of the first item in the group, and the content should wrap properly within the allocated space.

Actual Behavior: The items in the CollectionView do not wrap their content properly. The layout appears broken, with inconsistent item sizes and potential overflow issues.

Link to public reproduction project repository

No response

Version with bug

9.0.60 SR6

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

No response

Affected platforms

Android

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

[similar-issues-ai]

We've found some similar issues:

• [Windows & iOS] CollectionView2 ItemSizingStrategy="MeasureFirstItem" Fails to Apply Correct Sizing #29130 , similarity score: 82%

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

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This issue has been verified in Visual Studio Code (1.99.3) with MAUI versions (9.0.60 , 9.0.0 & 8.0.100). It can be reproduced on Android platform.