Except this is not in chrome but in Tizen, similarly to that post the media (mkv/h264/eac3) is being direct played and the audio track selection is only modified in the player UI... the audio keeps going with the first track no matter what.
Anyway yes, it's sad many apps have issues with ordering or default selection. The internal media player on Tizen is no exception (via dlna or usb stick), but at least I can switch between tracks there.
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