[iOS] Grouped CollectionView with a Footer stutters under MAUI 8.0.6

[MichaelShapiro]

Description

After updating to MAUI 8.0.6, CollectionView with Footer and IsGrouped="True" stutters and lags when scrolling. Stuttering is so significant that renders the use of such CollectionView impractical.

This can be related to #20294

This is MAUI 8.0.6 - performance is degraded

IMG_0016.mov

This is MAUI 8.0.3 - performance is normal

IMG_0018.mov

Steps to Reproduce

Open repo in the link below. Start CollectionViewFooter project.

Link to public reproduction project repository

https://github.com/MichaelShapiro/MauiBugs

Version with bug

8.0.6

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.3

Affected platforms

iOS

Affected platform versions

No response

Did you find any workaround?

Two options:

1. Downgrade back to MAUI 8.0.3
2. Remove Footer from the CollectionView

Relevant log output

No response

[bcaceiro]

I faced this with any collectionview - the performance was awful in newest release. Had to downgrade to go back to relatively better results

[kevinxufei]

Verified on 17.10.0 Preview 1.0 with iOS platform (MAUI:8.0.7). It is still repro.