As of right now and was also the case last week, dragoned dracthyr are missing auto attack sounds for melee weapons. Unarmed is unaffected and maybe one handed partially. But everything has no sound tied to it. Feel free to try out different weapons and just auto attack a dummy to see what I mean.
Even select abilities are missing sounds. I haven’t gone through everything, but Mongoose Bite for survival hunter is certainly missing some sound effects when performing it in dragon form.