Hi
I have a Huawei P10 and the latest software version
If I get a notification only shows that I've got one and not what…
That means if someone calls me there's 1 missed call but not by whom.
Or WhatsApp is 1 new message but not from whom and what?
It used to work!
So I mean the notification and the status bar above
Energy saving mode is off
See times in this link rein.ein Huawei Blog.vielleicht you find the right one.
https://www.huaweiblog.de/news/benachrichtigungen-push-problem-loesung-anleitung/