Hi,
When receiving provisional user notifications in iOS 15 the "Turn Off..." button works fine, but the "Keep..." button doesn't save the settings. "Deliver Immediately" option doesn't do anything and "Deliver in Scheduled Summary" hides the buttons, but they appear again in next notification.
I've noticed this behavior with several different apps, for example Reddit. Does anyone know anything about this? I have also submitted a bug to Apple but no response so far.