Why aren't my custom classes appearing in the dropdown in Interface Builder?

Question

I am using Interface Builder and Storyboards to build my app. I am trying to connect my source code to my UIViewController in Storyboard, but none of my classes sho

Answer 1

It happened to me and I've noticed the Class dropdown was showing classes from another project that I have opened in the background. After closing all the other projects, the drop down finally showing the correct list of classes from the project that I'm working on. Seems like an Xcode storyboard editor bug.