Yep - like your windshield wiper analogy. Sometimes it looks like Kinook have written their own components...
I just had the outer scroll-bar not let me scroll to the bottom of the Item Details Pane, which meant that i couldn't click on the lower arrow of the inner scroll-bar to move down through the content viewer region. Not that big a deal. I just clicked on another item then went back to the one in question and the metrics had been all sorted out.