Pinning widget after deploy rise NullReferenceException

[steam3d]

After first deploy, try to pin the widget. The console app will open and rise null exception in this line:

WindowsAppSDK-Samples/Samples/Widgets/cs-console-packaged/CsConsoleWidgetProvider/WidgetProvider.cs

Line 28 in 3de5dd9

foreach (var widgetInfo in widgetManager.GetWidgetInfos())

then will be called Activate method and trow error Activate called for unknown:

WindowsAppSDK-Samples/Samples/Widgets/cs-console-packaged/CsConsoleWidgetProvider/WidgetProvider.cs

Line 151 in 3de5dd9

throw new Exception($"Activate called for unknown ");

After killing widget.exe process two times (Exactly twice, once is not enough) the error always goes away.