CollectionView with grouping enabled shows duplicate childs after adding/removing a new child record

[boopathyraj25]

Description

Please refer attached screenshots

After adding a new child record at the top level group, the child records of all the other groups underneath are automatically manipulated leading to duplicate data under each group.

Steps to Reproduce

1. Run the code from repo link provided below which will preload parent and child records on the collectionview.
2. Tap on "Service4" under "Category2", say Yes on delete promt to remove it from collection. The item is programmatically removed but not reflected on the UI.
3. Now tap on "Service2" under "Category1", say yes in the delete prompt.
4. Now see the child items under "Category3" are duplicated.

Link to public reproduction project repository

https://github.com/boopathyraj25/MAUI.CollectionViewBugs

Version with bug

8.0.21

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 27 and up

Did you find any workaround?

No

Relevant log output

No response

[PureWeen]

/similarissues

[github-actions[bot]]

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!

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[jaosnz-rep]

Can repro this issue at Android platform on the latest 17.10 Preview 6(8.0.21 & 8.0.14).

[vplife1]

@jaosnz-rep Facing same issue for iOS @PureWeen

[BlotskiyDmitriy]

@boopathyraj25 I reproduced this and found a workaround. You can inherit from ObservableCollection instead of List in ServiceCatUIModel. Maybe this will help you.

[BlotskiyDmitriy]

Also, this error is still reproducible on Microsoft.Maui.Controls version 8.0.40