[Regression] [iOS] Flyout Menu CollectionView First Item Misaligned Since 9.0.51 (iOS 15–18.1 Affected, Works in 9.0.50)

[malsabi]

There is a regression starting in .NET MAUI 9.0.51 (and persisting through the latest 9.0.81) that affects the flyout menu on iOS. The issue is not present in 9.0.50.
When using a CollectionView inside the flyout menu (between a header and footer), the first item is rendered too low (misaligned) instead of immediately below the header.

The result is different when tested on different simulators. I mentioned below on which simulator exactly this issue was happening and on which simulator it was working fine completely.

Note: I cant see the version 9.0.51 in the "Version with bug" drop down. So I picked 9.0.60
Note: It was working fine in 9.0.50 for both simulators.

I tested on the following iOS Simulators:

• iPhone 13 iOS 15.5
• iPhone 15 iOS 17.2

No Issue in 9.0.50 (iPhone 15 iOS 17.2 & iPhone 13 iOS 15.5):

Issue In 9.0.51 (iPhone 15 iOS 17.2) but works fine in (iPhone 13 iOS 15.5)

Issue in 9.0.70 (iPhone 15 iOS 17.2) but works fine in (iPhone 13 iOS 15.5)

Issue In 9.0.81 (iPhone 15 iOS 17.2) but works fine in (iPhone 13 iOS 15.5)

Steps to Reproduce

No response

Link to public reproduction project repository

https://github.com/malsabi/AppShellIssue

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

9.0.50 SR5

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

No workaround found.

Relevant log output

[similar-issues-ai]

We've found some similar issues:

• [iOS] CollectionView not rendering first item correctly in FlyoutPage.Flyout #29170 , similarity score: 84%

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.

This issue has been verified in Visual Studio Code 1.101.0 with MAUI versions 9.0.81, 9.0.70, 9.0.60, 9.0.51 & 9.0.50. It can be reproduced on iOS platform from MAUI versions 9.0.51.

[malsabi]

@PureWeen Is it possible to include this in SR10? Thanks.