[MVUX] ListView flickers when updating an entity

[dr1rrb]

Current behavior

When we update an entity within a List<Feed|State> that is data-bound to a ListView, the item might flicker on windows.

Expected behavior

No flicker

How to reproduce it (as minimally and precisely as possible)

MVUXWithListView.zip

Anything else we need to know?

• Removing Transitions from the ListView does not change anyhing:

<ListView.Transitions>
	<TransitionCollection />
</ListView.Transitions>

• Adding the 4 ListView in the repro app reduces the amount of flickers (i.e. charging the UI thread reduces the occurrence!)

Workaround

Use an ItemsRepeater instead of a ListView.

Environment

Nuget Package (s): Uno.Extension.Reactive
Package Version(s): latest
Affected platform(s):

• iOS
• macOS (AppKit)
• Mac Catalyst
• Android
• WebAssembly
• Windows
• Skia (WPF)
• Skia (GTK on Linux/macOS/Windows)
• Skia (Linux Framebuffer)
• Build tasks

[libra34567]

Would we be expecting a fix soon please?, Or may I know if its gonna be fixed anytime soon.
The issue with ItemsRepeater is that it has a different type of flicker now, up and down. So its really not usable for the users.

[agneszitte]

Would we be expecting a fix soon please?, Or may I know if its gonna be fixed anytime soon. The issue with ItemsRepeater is that it has a different type of flicker now, up and down. So its really not usable for the users.

cc @dr1rrb, @nickrandolph

[nickrandolph]

@dr1rrb any movement/suggestions on fixing this?

[dr1rrb]

@libra34567 what's the issue you have with the IR? Is it linked to List<Feed|State> or a general issue?