WrapPanel autowrap sorting problem

[Coloryr]

Describe the bug

When the window is not that small, sorting is normal, but there is a problem with sorting when the window is smallest.
Not the smallest case:

The smallest case:

To Reproduce

Adjust window width

Expected behavior

No response

Avalonia version

11.0.11

OS

Windows

Additional context

https://github.com/Coloryr/ColorMC/blob/5f18c13347aece1accd7bdac14ed8a43d4e7634b/src/ColorMC.Gui/UI/Controls/Setting/Tab4Control.axaml#L131-L157

[Coloryr]

[Coloryr]

Could anybody take a look at this question?

[timunie]

If it is a question -- Don't file it as a bug!!

Otherwise, please file a very minimal sample, not your full App.

[Coloryr]

If it is a question -- Don't file it as a bug!!

Otherwise, please file a very minimal sample, not your full App.

Ok...
But I think this is a bug.

AvaloniaApplication1.zip

[stevemonaco]

It seems like a bug to me, particularly when Margin is involved (either left or right side) and the item cannot fit on a single line. If Margin is removed, then the behavior appears correct. The next item is moved onto the same already overfilled line (when checking Bounds in DevTools). There's different behavior between Avalonia and WPF, too. Using a simplified repro in 11.1-rc2:

<WrapPanel>
  <TextBlock FontSize="24" Text="01234567890123456789" Margin="0,0,50,0" Background="Orange" />
  <TextBlock FontSize="24" Text="9876543210" />
</WrapPanel>

Avalonia behavior:

WPF behavior:

[timunie]

I agree, no item should disappear. Thx for the repo