ItemsSource cannot be changed on a Picker on Windows

[pekspro]

Description

On a Picker, it's not possible to change the ItemsSource after it has been set on Windows (works find on Android). At least not easily. Every time you try to change, the previous set list is used instead.

Steps to Reproduce

1. Create a new MAUI application.
2. Replace MainPage.xaml:

    <VerticalStackLayout 
        Spacing="25" 
        Padding="30,0" 
        VerticalOptions="Start">

        <HorizontalStackLayout Spacing="25">
            <VerticalStackLayout>
                <Label Text="Available colors:" />
                <Label Text="{Binding Colors[0]}" />
                <Label Text="{Binding Colors[1]}" />
                <Label Text="{Binding Colors[2]}" />
            </VerticalStackLayout>

            <VerticalStackLayout>
                <Label Text="Select a color:" />
                <Picker ItemsSource="{Binding Colors}" SelectedIndex="{Binding SelectedColorIndex}" />
            </VerticalStackLayout>
        </HorizontalStackLayout>

        <Button 
            x:Name="CounterBtn"
            Text="Show blue colors"
            Clicked="OnCounterClicked"
            HorizontalOptions="Start"
            />
        
    </VerticalStackLayout>

3. Replace MainPage.xaml.cs:

public MainPage()
{
    InitializeComponent();

    BindingContext = this;
}

public List<string> Colors { get; set; } = new List<string>()
{
    "Red",
    "LightRed",
    "DarkRed",
};

public int SelectedColorIndex { get; set; }

private int ChangeCount = 0;

private void OnCounterClicked(object sender, EventArgs e)
{
    ChangeCount++;
    Colors = new List<string>()
    {
        "Blue " + ChangeCount,
        "LightBlue " + ChangeCount,
        "DarkBlue " + ChangeCount,
    };

    OnPropertyChanged(nameof(Colors));
    SelectedColorIndex = 0;
    OnPropertyChanged(nameof(SelectedColorIndex));
}

4. Run the application. The default red colors are visible:

5. Press the button to change to blue colors. They are not changed in the picker:

7. Press the button again. Now they are changed in the picker, but the previous list is used:

Full repro: https://github.com/pekspro/MauiIssues/tree/9239_ItemsSource_cannot_be_changed_on_a_Picker

Version with bug

6.0.408 (current)

Last version that worked well

Unknown/Other

Affected platforms

Windows

Affected platform versions

Windows 10.0.17763.0

Did you find any workaround?

Using an ObservableCollection<string> works if it is set once and the individual items are changed.

Relevant log output

No response