Empty device properties in DirectShow

Question

I am using DirectShow.Net to enumerate DirectShow devices like this:

var devices = DsDevice.GetDevicesOfCat(FilterCategory.AudioInputDevice);

This code returns the expected number of audio devices but all of the items returned have null names and other properties:

devices[0]
{DirectShowLib.DsDevice}
    ClassID: System.NullReferenceException: Object reference not set to an instance of an object
    DevicePath: null
    Mon: null
    Name: null

I have confirmed the devices are properly registered with GraphStudioNext and I know the audio devices are working in general. And I have the same issue with other devices like FilterCategory.VideoInputDevice.

Any ideas?

.Net Version: 4 Build target: 64 bit OS: Win 10