[Bug] Inconsistent behavior with GridItemsLayout in CollectionView (height adjustment of childs)

[Sebastian1989101]

Description

The behavior on iOS and Android is different how GridItemsLayout adjust the height of the childs. Please have a look at this: https://stackoverflow.com/questions/68848377/xamarin-forms-collectionview-griditemslayout-same-height-elements

Steps to Reproduce

1. Use a CollectionView with a multi column GridItemsLayout

Expected Behavior

The childs are filled to match the height of others on iOS (just as it is on Android).

Actual Behavior

The childs are centered on iOS and stretched on Android.

Basic Information

• Version with issue: 5.0.0.x (tested the latest 3 versions)
• Last known good version: none
• Platform Target Frameworks:
  • iOS: 14.5
  • Android: API 30
  • UWP: n/a
• NuGet Packages: -
• Affected Devices: All iOS devices

Screenshots

This is how it looks on iOS:

And this is how it looks on Android (and how I would expect it):

Workaround

Sadly not found yet (based on SO, I'm not the only one with this problem).

[yunusefendi52]

I can reproduce this issue inconsistentgridviewlayoutheight.zip