Selecting Audio Input Device on Xbox App

I regularly use the Xbox App to join Party Chats.

Typically I like to use my Bluetooth headphones so that I hear the audio directly in my ear, and so I don't inadvertently cause echoing for the rest of the party. (The mic on my headset is also less sensitive, and I prefer that).

The Xbox App used to provide the ability to choose which input/output device to use for audio. There was a drop down menu where you could select

"Speakers" (Speaker Phone)

"Headset" (Connected Bluetooth headset, etc.)

This menu no longer seems to be available.

Was this an intentional removal of a feature? Is there a different way to access it now?

It was a super useful feature, and without it I'm limited to using my phone mic and speaker phone which causes horrible echoing in the party chat.

Ahead of time, thank you for the help!

:)