Recently i've upgraded to XCode8 and i've projects created with XCode7 , after that i've opened my storyboard and it looks a little bit weird it shows only blue squares. is this normal all there's any configuration to do . There's how it looks like StoryBoard in my XCode8
I had the exact same issue. Despite xcode "supporting" the latest version of El Capitan, it doesn't really. I upgraded to Sierra, and as soon as I did, the Storyboard started to render the screens as expected.
Hope this helps you.
