SfPicker - Ok-Button diappears after first click

[bennimoser]

Description

ToolkitVersion 1.0.5

When displaying an OK button in the footer of a Picker, the button becomes invisible after the first click.
However, the TapGestureRecognizer still works — tapping the area where the button was still triggers the event.

Video:
https://github.com/user-attachments/assets/ceb90ee7-1e18-4933-915d-99dc578575fd

Steps to Reproduce

Open Maui App on Windows.

MainPage.xaml

 <VerticalStackLayout Padding="30,0" Spacing="25">
     <picker:SfPicker
         x:Name="SfPicker"
         Mode="Dialog"
         OkButtonClicked="SfPicker_OnOkButtonClicked">
         <picker:SfPicker.Background>
             <SolidColorBrush Color="Transparent" />
         </picker:SfPicker.Background>
         <picker:SfPicker.FooterView>
             <picker:PickerFooterView Height="40" ShowOkButton="True" />
         </picker:SfPicker.FooterView>
     </picker:SfPicker>
     <Button
         Clicked="OnCounterClicked"
         HorizontalOptions="Fill"
         Text="Open Dialog Picker" />
 </VerticalStackLayout>

MainPage.xaml.cs

private void OnCounterClicked(object? sender, EventArgs e)
{
    this.SfPicker.Columns.Clear();
    ObservableCollection<object> cityName = new ObservableCollection<object>();
    cityName.Add("Chennai");
    cityName.Add("Mumbai");
    cityName.Add("Delhi");
    cityName.Add("Kolkata");
    cityName.Add("Bangalore");
    cityName.Add("Hyderabad");
    cityName.Add("Pune");
    cityName.Add("Ahmedabad");
    cityName.Add("Jaipur");
    cityName.Add("Lucknow");
    cityName.Add("Chandigarh");
    PickerColumn pickerColumn = new PickerColumn()
    {
        HeaderText = "Select City",
        ItemsSource = cityName,
        SelectedIndex = 1,
    };
    this.SfPicker.Columns.Add(pickerColumn);

    SfPicker.IsOpen = true;
}

private void SfPicker_OnOkButtonClicked(object? sender, EventArgs e)
{
    SfPicker.IsOpen = false;
}

Version with bug

1.0.4

Is this a regression from previous behavior?

No, this is a new issue

Last Known Working Version

1.0.3

Affected platforms

Windows

Affected Platform Versions

net9.0-windows10.0.19041.0

Have you found a workaround?

`Not yet

Relevant log output