On Zenfone 7 Pro there's this weird phenomenon where sometimes an audio application (e.g. Roland Zenbeats and some others like drum simulators) is allowed to waste all the battery in background without the phone "noticing it", even when the phone is not in use for a day straight. I think it happens, if I don't close the application explicitly, but I'm not sure. The battery consumption report says 15 minutes active and 0 background usage, which is obviously wrong as 30% of battery got wasted after 5 hours.
For some applications I get notified of the battery waste, but some applications waste 30% in a short time and there is nothing. I don't remember disabling these notifications, and I don't remember these notifications working correctly.
There is something odd going on and current battery optimizations are not enough.