Scrolling through very large number of items in ItemsRepeater + virtualized Layout + ScrollView causes blank frames

[RBrid]

Describe the bug

When a ScrollPresenter/ScrollView control is hosting an ItemsRepeater with numerous items and a virtualized Layout like the StackLayout, scrolling through those items causes frequent blank frames. This can be seen for example when dragging the Thumb of a ScrollView ScrollBar.

Steps to reproduce the bug

Populate an ItemsView with 10000 items (it internally uses a ScrollView, an ItemsRepeater and a virtualized StackLayout by default). Use the mouse to drag the ScrollBar's Thumb.
Result: a mix of frames that show items and blank frames.

Expected behavior

No blank frames.

Screenshots

No response

NuGet package version

None

Windows version

No response

Additional context

No response

[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. Thank you!

Open similar issues:

• ItemsRepeater and ScrollView jumping back and forth (#9308), similarity score: 0.75
• Application hangs when scrolling (#9199), similarity score: 0.75
• ItemsRepeater breaks when scrolling through variable height items (#1829), similarity score: 0.73
• ItemsRepeater with layout horizontal does not update ScrollableWidth of ScrollViewer (#9117), similarity score: 0.73

Closed similar issues:

• ItemsRepeater slow rendering issue (#7308), similarity score: 0.74

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[RBrid]

This bug has been fixed recently and the fix will ship in an upcoming release of the WinAppSDK.