This isn't a game breaking thing as much as it is an annoyance, but when you mount the sunwalker kodo my tauren rocks back and forth like a metronome, its rather annoying. I tried mounting on other kodos and the animation for them is fine. Not sure if this is the proper place to post something like this but seemed like a bit of a bug to me.
Just hit 20 and got my Sunwalker Kodo. Yes it is still rocking back and forth sideways as you ride. I mounted the other kodos, including the Brewfest, and the Sunwalker Kodo is the only one that does it. Starting to get whiplash IRL just watching it!