问题
I'm trying to implement a form sheet. Here is what it looks like on Storyboard:
When i run the app only the background appear and everything else is hidden. I'm presenting the form sheet using Modally Presented - form sheet and i'm working with (wRegular hRegular) size. Why is that happening?
来源：https://stackoverflow.com/questions/26886372/form-sheet-content-disappearing