I noticed when I first installed beta 1 my notifications showed up in groups by app and I really liked that feature. Now they are showing one notification after the other like in iOS 11. For example if the same person sends me three messages I see three separate notifications. Is this the intended behavior? Do the groups only show up once I get a whole lot of messages on my screen? Or do I need to get notifications from a few different apps before the OS will group them?