Yes. Those stupid knobs confused me terribly. I kept trying to move the mouse cursor as if it were my finger, using it to rotate that little notch on the knob. Because, like, it's a knob... right? I mean, I've used knobs before. That's how they work. And this is a knob. I know that, because it looks like one. EVEN THE STUPID BAR GOES ROUND THE KNOB. It's telling you to rotate it. And then you rotate it, and it doesn't work.
What, you don't usually tie a string around your knobs and pull up or down, depending on how you want it to turn?
Seriously, though, once I figured out how they work (it took a few seconds), it was just fine. I don't know what all the furore is about, it's at most a minor inconvenience.
Dear people, stop doing this.