Malformed buttons with SproutCore
问题 This week I started learning SproutCore. I quite like the framework, but hate the absence of learning material. After going through most of the guides I decided to learn by trying to build something. I wrote a little GridView with buttons in it, but the buttons seem to be distorted, there are labelless blue copies under each button, and a couple of pink lines. What is this? Why is this? How do I get rid of it? Relevant code: buttons: SC.GridView.design({ layout: { centerX: 0, top: 40, width: