如何让这个fontpicker在引导模式w/ a选项卡中正确显示

I am using the fontpicker found here. I put it inside a modal and it worked fine. Now, I've put tab navigation inside the modal and the fontpicker doesn't display properly. (The button for the first modal is the broken one. The button for second modal is an example of the same thing, but w/out the tabbed navigation.). I put it