iOS 13 push-notifications delegate methods are not called

Question

In my existing applications I am not able to receive delegate methods:

• Xcode 11 & iOS 12.3.1 - Working
• Xcode 11 & iOS 13 - Not Working

Answer 1

yes building the code base with XCode 11 and iOS 13 seemed to fix this for me.

• built app with Xcode 10 + iOS 12.
• installed on iOS12
• installed on iOS13.0
• send push
• only appearing on iOS12
• Rebuilt the app with XCode 11 and iOS 13.0
• Send push
• appears on iOS 12.4 + iOS 13.0

Answer 2

Restarting device seems to fix it. Happened a couple of times.