CollectionView scrolling is jittery when ItemTemplate contains Label with TextType="Html" in .NET 10

[Andreas973]

Description

I have noticed significant UI jitter when scrolling in a CollectionView when the ItemTemplate contains a Label with TextType="Html".

When scrolling, the labels appear to resize or snap into place after appearing, causing the scroll position to jump visually. This issue does not occur if TextType is set to Text or if the Label is removed.

Steps to Reproduce

1. Create a new .NET MAUI project using .NET 10.
2. Add a CollectionView to a page.
3. Set the ItemTemplate to a DataTemplate containing a Label.
4. Set the Label properties: TextType="Html" and bind Text to a string containing basic HTML (e.g., Bold text).
5. Populate the ObservableCollection with 20+ items to enable scrolling.
6. Scroll up and down in the CollectionView.

Link to public reproduction project repository

https://github.com/Andreas973/MauiHtmlLabelCollectionViewScroll

Version with bug

10.0.11

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

9.0.120 SR12

Affected platforms

iOS

Affected platform versions

iOS 26

Did you find any workaround?

No response

Relevant log output

[TamilarasanSF4853]

This issue has been validated in Visual Studio Code 1.106.3 with MAUI versions 9.0.120, 10.0.0-rc.1, 10.0.0-rc.2, 10.0.0, 10.0.11. It can be reproducible on iOS 26 and 18 platforms in CV2.

Note: The issue was not reproduced on both net9 and net10 in CV1.

CV1	CV2
9.0.120.mp4	10.0.11.mp4