audioTrack and availableAudioTracks never populate

We're working on adding some analytics about how users are viewing our content. We want to record the audio language that users are selecting on our videos as we provide English and Spanish tracks in our smoothstreams. It appears that the audioTrack and availableAudioTrack fields on the video node are always empty string; they start out empty on initialization and never change even if the audio track is changed. This doesn't feel like expected behavior.

I saw another user on the forums had the same problem and was directed to email roku directly back in March. I thought i'd give the forums one more shot before I emailed roku as well.