Actually, I didn't even realize the scroll wheel worked, and instead was using the arrow navigation on the right. I typically only assume the scroll wheel works when I see a visual cue such as a scroll bar on the right.

And even using the arrow navigation, the experience seems broken, as it wasn't flying in the art until after I clicked down to the next section. I would see the art flying in, but it was too late, as it was moving down to the next section.