CollectionView - ItemsUpdatingScrollMode="KeepScrollOffset" does not work in Windows

[schlaman]

Description

I have a collection view with ItemTemplate={StaticResource MyTemplateSelector}
I have a dozen different templates to basically present the list of items as 'Widgets'.
I want to keep the scroll position the same even though new items are being added to my CollectionView.

In Windows if I am scrolled somewhere away from the beginning of the list then as I add an item, the list scrolls back to the beginning each time.

In iOS when I am scrolled away from the beginning of the list and I add an item, then the scrolling position is unchanged.

Steps to Reproduce

Create a .NET Maui Shell app and have a ContentView that contains a CollectionView and put enough items in it to allow for multiple pages of scrolling and also set ItemTemplate={StaticResource MyTemplateSelector}.

Also, set the CollectionView ItemsUpdatingScrollMode="KeepScrollOffset"

As you scroll to somewhere in the middle of the list (off the screen) and then you add a new item, in Windows observe that as you add a new item that the scrolling position snaps to the top (it should have stayed put but it did not).
In iOS observe that the scrolling position does NOT move at all as you add a new item (CORRECT behavior).

Link to public reproduction project repository

No response

Version with bug

8.0.21 SR4.1

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

No response

Did you find any workaround?

No

Relevant log output

No response

[PureWeen]

/similarissues

[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:

• CollectionView - ItemsUpdatingScrollMode="KeepScrollOffset" does NOT work in Windows but does work in iOS (#22162), similarity score: 0.99
• CollectionView ItemsUpdatingScrollMode and deselect not working on macOS (#21236), similarity score: 0.78
• KeepLastItemInView not working on iOS (#18029), similarity score: 0.77

Closed similar issues:

• ItemsUpdatingScrollMode not working for Windows Platform on .NET 7 MAUI (#16887), similarity score: 0.81
• [Windows] CollectionView ItemsUpdatingScrollMode property not working (#4116), similarity score: 0.81

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

[dotnet-policy-service]

Hi @schlaman. We have added the "s/needs-repro" label to this issue, which indicates that we require steps and sample code to reproduce the issue before we can take further action. Please try to create a minimal sample project/solution or code samples which reproduce the issue, ideally as a GitHub repo that we can clone. See more details about creating repros here: https://github.com/dotnet/maui/blob/main/.github/repro.md

This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[dotnet-policy-service]

This issue has been automatically marked as stale because it has been marked as requiring author feedback to reproduce the issue but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.