[BUG] Margin and Padding don't work in CollectionView

[acaliaro]

Description

On iOS Margin and Padding don't work in CollectionView. In the attached example, I have 3 collection views.

• In the first, a grid with padding appears to maintain padding correctly.

• In the second, the grid with the margin does not maintain the margin: I would expect there to be white space around the grid but the blue color is continuous.

• In the third (with border), it seems that the padding is replaced by a margin.

I have seen that in the past some bugs relating to these problems have already been opened, apparently resolved, but apparently not correctly

Steps to Reproduce

Run the project
presso "popup problem!!!!" button
a page with 3 collections should appears

Link to public reproduction project repository

https://github.com/acaliaro/MauiCollectionViewPaddingProblems

Version with bug

8.0.60 SR6

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI, Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iOS 17.3 iphone 12

Did you find any workaround?

I think this could help #17885 (comment)

Relevant log output

No response

[github-actions]

Hi I'm an AI powered bot that finds similar issues based off the issue title.

Please view the issues below to see if they solve your problem, and if the issue describes your problem please consider closing this one and thumbs upping the other issue to help us prioritize it. Thank you!

Open similar issues:

• Margin doesn't work inside CollectionView EmptyView (#8494), similarity score: 0.79
• [iOS] Label's width can't full fill Grid's * (GridUnitType.Star) space when Grid has a Horizontal padding (#16912), similarity score: 0.78

Closed similar issues:

• [iOS] Margin does not work on Border inside a CollectionView (#19365), similarity score: 0.84
• Border Margin on IOS Increases Padding (#14051), similarity score: 0.82
• Collection in StackLayout incorrect padding and margins (#6524), similarity score: 0.80

Note: You can give me feedback by thumbs upping or thumbs downing this comment.

[Zhanglirong-Winnie]

This issue has been verified using Visual Studio 17.11.0 Preview 2.1 (8.0.40 & 8.0.60 & 8.0.14). Can be reproduced on iOS platform.