Hey, there! Sorry for the delayed response. I thought I had notifications set up for Devtalk, but I guess not.
Anyway, with Xcode 12, at least the beta version, you’ll need to add a new plist entry, “Launch screen interface file base name”. You can either add this entry and set its value to “Main” or create a custom LaunchScreen.storyboard file and set its value to “LaunchScreen”.
If that doesn’t work, let me know. I may have misunderstood the problem/question.