Reunion 0.5.5: Attribute metadata missing

[dayman40]

Fixed in 0.5.6

In Reunion 0.5.0, the TemplatePart attribute was defined correctly, however there looks to be a regression in 0.5.5.

See the below code blocks showing how the TemplatePartAttribute is missing attribute metadata in Reunion 0.5.5 compared to Reunion 0.5.0.

Reunion 0.5.5:

namespace Microsoft.UI.Xaml
{
    // Summary:
    //     Represents an attribute that is applied to the class definition to identify the
    //     types of the named parts that are used for templating.

    [WindowsRuntimeType("Microsoft.UI")]  Notice all metadata data missing

    public sealed class TemplatePartAttribute : Attribute

    {
        public string Name;
        public Type Type;

        // Summary:
        //     Initializes a new instance of the TemplatePartAttribute class.
        public TemplatePartAttribute();
    }
}

Reunion 0.5.0:

namespace Microsoft.UI.Xaml
{
    // Summary:
    //     Represents an attribute that is applied to the class definition to identify the
    //     types of the named parts that are used for templating.

    [AllowMultiple]
    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
    [ContractVersion(typeof(WinUIContract), 65536)]
    [WebHostHidden]
    [WindowsRuntimeType("Microsoft.UI")]

    public sealed class TemplatePartAttribute : Attribute
    {
        public string Name;
        public Type Type;

        // Summary:
        //     Initializes a new instance of the TemplatePartAttribute class.
        public TemplatePartAttribute();
    }
}

This code is failing to compile with error CS0579.

Severity	Code	Description	Project	File	Line	Suppression State
Error	CS0579	Duplicate 'TemplatePart' attribute	SpectrumComponents	*	60	N/A

[TemplatePart(Name = PartDialogButton1, Type = typeof(SpectrumButton))]

[TemplatePart(Name = PartDialogButton2, Type = typeof(SpectrumButton))]

[TemplatePart(Name = PartDialogButton3, Type = typeof(SpectrumButton))]

[TemplatePart(Name = PartDialogTitle, Type = typeof(ContentControl))]

[TemplatePart(Name = PartDialogIcon, Type = typeof(BitmapIcon))]

[TemplatePart(Name = PartDialogContent, Type = typeof(ContentPresenter))]

[TemplatePart(Name = PartDialogButtonPanel, Type = typeof(Grid))]

public sealed partial class SpectrumDialog : ContentDialog {}

[dotMorten]

Did this only affect the TemplatePartAttribute class, or all attributes? Title seems to indicate them all, so it's not clear if the description is just an example.