I stumbled upon this and there is now another way to receive notifications without having the screen light up.
Swipe right on a notification and click on manage. Then click deliver quietly. Notifications will not alert you but are sent directly to the notification centre.
I use an app called Pushover which has apps for the Mac and iPhone/iPad. It can receive messages of various levels of “urgent-ness” even to the point of being allowed to bypass “Do Not Disturb” on iOS 14 if you so choose.
Pushover has an API that allows you to send messages using curl and it is very easy to use, and has very generous usage allowances. Using ...
I did a bit of digging and uncovered a fairly unobtrusive workaround for this. YMMV, but it worked for me. Tested on macOS 11.4.
By restarting a few system agents, the bug appears to go into remission. This leads me to believe that the root cause is some sort of timing issue or race condition that happens during boot.
Until a proper fix exists, I welcome ...