StorageApplicationPermissions throws exception in unpackaged app build

[GuildOfCalamity]

Which version of the app?

WinUI 3 Gallery

Description

In the FilePickerPage.cs there is the async void PickFolderButton_Click(object sender, RoutedEventArgs e) method:

[Line 187]
StorageApplicationPermissions.FutureAccessList.AddOrReplace("PickedFolderToken", folder);

If compiling as an unpackage application, this line throws an ArgumentException (see screenshot).

Screenshots

Windows version

Windows 10 22H2 (19045)

Additional context

No response

[karkarl]

This is likely an API that doesn't work on unpackaged, and should be providing appropriate documentation.