When I open the form in Safari and the window is shorter than the length of the form, the portion of the form below the bottom of the window isn't always rendering when I scroll or expand the window. This may be hiding the rest of the questions for you. To fix, just expand the window and hit refresh.

It asks what's the coolest thing you've built.

Indeed it does. When I posted my comment, the additional questions about tools and coolest thing you've built, were not appearing.

Edit: As mentioned in a sibling comment, This appears to be an issue with Safari where items 'below the fold' don't render. Strange.