[Bug] - CollectionView, span and VerticalItemSpacing

[Cr15Denis]

Xamarin Forms 4.8.0.1687
Visual Studio 2019 16.8.2

Platform affected
-Android
-IOS
-UWP(It has not been verified if it generates any problem)

Android

In the collectionview when I use span “2” two or more columns and also VerticalItemSpacing,
the last item in the list does not apply the VerticalItemSpacing.

IOS

In the collectionview when I use span “2” two or more columns and also VerticalItemSpacing,
a large spacing is generated at the end of the list, a footer is not being used.

Project
https://github.com/Cr15Denis/Bug-spanAndVerticalItemSpacing

[EvanMulawski]

This might be fixed in #10624 .

[ugnivs]

It seem like bottom inset is calculated like VerticalItemSpacing * collectionView.NumberOfItemsInSection. What is the reason

Xamarin.Forms/Xamarin.Forms.Platform.iOS/CollectionView/ItemsViewLayout.cs

Line 116 in caab66b

public virtual UIEdgeInsets GetInsetForSection(UICollectionView collectionView, UICollectionViewLayout layout,