They mention on its description that this particular title is still in beta for its Mac and Linux versions. So hopefully that'll be cleared up soon if they are getting feedback from users with the problem.
Joe Danger 2 is amazing fun! I couldn't put it down yesterday!
Even did a little video to show folks what it's like.
I would highly recommend it, it's so much fun, and the extra character skins are awesome. Such as a Minecraft one, and the entire TF character line up.