Some notifications are delayed until the screen is on
Some apps' notification are not received when my screen is off. Once I wake up my phone, the messages are then received and shown. It works ok though for apps like WhatsApp, Message, Email.
I've checked all the battery optimization settings for those affected apps but had no clues why they are not working the way they should. These apps are working fine in my other devices.
Also tried to turn off Adaptive Notifcation, still the same.
Appreciate any suggetsions.