I'm running an app with the com.apple.developer.usernotifications.filtering entitlement and the filtering works fine with iOS 15.
However I tried running it on an older phone / OS (iPhone 8 / iOS 13.1.2) and it does not work.
Is this entitlement not supported with iOS 13.1.2? If so, what is the earliest iOS version that supports it?
The handset logged this:
The OS displayed: default 07:55:58.800825-0800 NotificationServiceExtension Mutated notification request will not visibly alert the user, will deliver original content
If the app is run on iOS 15, it says :
default 07:20:27.251600-0800 SpringBoard Mutated notification request will not visibly alert the user, will supress original content