Alarm clock apps have stopped working with screen off
Up until updating to iOS 13, I used a third-party alarm clock app that I liked. I would set the alarm as the last thing I did, and then turn off the screen, and as expected it would sound at the set time.
But under iOS 13, this particular app stopped working. It will not launch. OK, stuff happens, the developer hadn't updated the app in a while, the OS had evolved beyond it. Time to find another app.
But from what I can see, each app I've tried will not work with the screen off. Alarm clock apps need to be set, with the screen kept on (some have settings to prevent the screen turning off). Is this now a requirement of third-party apps? The stock Clock app works OK, but I'd prefer another. Has it become impossible under iOS 13 for a third-party clock app to continue to function with the screen turned off?
iPhone SE