Thanks! I found it:
Windows-Feedback:?contextid=68&feedbackid=86e43919-9e8c-49eb-9083-96f111423ff4&form=1&src=2
I promoted it to a bug, then updated the bug to have a link back to this thread.
-----Original Message-----
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Eugene Muzychenko
Sent: Friday, October 30, 2015 8:05 AM
To: Matthew van Eerde <wdmaudiodev@xxxxxxxxxxxxx>
Subject: [wdmaudiodev] Re: Multichannel test playback in Win10
Hello Matthew,
Would you be willing to create a separate Microsoft account for test purposes?