I did yes, I asked this question on stackoverflow and this is the answer i got""In Xcode 11 there is really no such thing as the assistant editor any more. It exists, but it is very limited and automatic, as you see. It isn’t needed any more because now you can just open multiple ordinary editor panes.So turn off the assistant and just Option click on a file listing in the project navigator to show it in its own pane."Now i have tried this before i asked but it wouldnt do what I what i was trying to do.I was trying to connect my storyboard to my code. Upon further inspection it turns out I forgot to set the class within my view controller to the desired one.

I am having the same issue, I have gone too far make a new project and start over. I was wondering if there is an actual fix for this problem