The notification for the stock calendar app is firing off every 2-3 minutes for some reason. These notifications for it cannot be turned off - the sliders/buttons to turn them off do not respond. You can only set them to Alerting or Silent (down one submenu into the notifications themselves). I think it might be the calendar ‘Alert Sync’ notification but I am not entirely sure. This repeating notification itself just says ‘Event Notifications’ when you slide down from the top bar.
This is the same bug I experienced when I was trying out /e/ on an Essential PH-1. It was annoying enough that I gave up and went back to LineageOS - why is this happening on the S9 now?
Adding info here for posterity. I was pointed to this thread about uninstalling or disabling the default apps. This stopped the calendar notification from going off repeatedly.
