After upgrading my phone to Android 8.1 all OpsGenie notifications just use the same default tone set in my phone settings (which is just a little beep “chime” or something that won’t wake you up at night).
However, via AndroidSettings -> Apps & Notifications -> OpsGenie -> app-notifications -> Default-category, I can set another tone which then get’s used for all OpsGenie notifications. Also not very satisfying.
I read there are similar problems for the Android SMS/Messanger app and for example the Twitter app cause of the newly introduced notification channels in 8.1.
See Pixel Default Notifcation Sound overriding App Nofication Sound
The App-Notifications settings for Twitter show various types of notifications (categories) to set different tones and other settings (like do not disturb, vibrate and so on).
I already tried wiping the app-cache, re-installed the app but without success.
Google Pixel XL, Android 8.1.0, Security Update 5. Jan 2018