Ogg Opus files fail to be added to Roon library despite Roon ARC supporting Opus transcoding/delivery

I understand it sounding like a feature request. But as Roon ARC already supports transcoding & delivery of OPUS codec, I’m wondering if this is a previous limitation that was forgot about by Roon devs (from back before Roon ARC).

Screenshot below: Delivery path showing Roon does support encoding files to Opus format before delivering to Roon Arc device.

Source: Arc using the Opus codec for lossy use