As for a mouse example, as far as I know, usually it's an issue with a rotary socket or the shaft, one or the other wears out after a time and the wheel starts scrolling without moving the rotary sometimes.
It might be a similar construction in Pod Go, but why do you think it's the same problem in a brand new device?
Haha, hope I won't need a forum's help with that knob anytime soon, but you never know... :)
I'm not trying to nitpick here, if it's a soft issue, yes, it's annoying but I can live with that just fine. I just wanted to put my concerns to rest that it's not a physical knob issue, because in that case it would be a serious problem, since there is no alternative way to operate the unit if it starts to skip more and more clicks.
But since you also have the same, I lean more toward it being just a minor bug.