Headset audio mirroring in Windows Mixed Reality Portal no longer working

[Guest WebMaximus]

Noticed the other day how audio mirroring (seen in the screenshot below) no longer works even when I have the option enabled.

 

I tried using the same feature in SteamVR where it works just fine. So seems to be an issue tied specifically to WMR Portal.

 

Anyone else seen this issue or has any idea how to sort it? I've made sure I'm using all the latest version of hardware drivers and my Windows (build 1809) is fully up-to-date when it comes to fixes and patches. Have kept away from 1903 initially since a utility I'm relying on called vJoy has not been compatible with 1903.

 

Since I didn't change anything to my config, the only thing I can think of is some Windows update that was automatically applied messed this up. But that's just me guessing of course.

 

This is the option I'm talking of seen in WMR Portal that won't mirror the audio anymore even when it's set to ON

 

 

And here's the same type of feature in SteamVR where it works just fine

 

 

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