Already reported via Feedback app on phone.
The ringtone volume is very low compared to 7.1.1. You need to put it to max in order to have the same volume level as you had before with the middle setting.
This should be changed back to the previous levels. It's too low now.
I agree with what you said.
I also agree, the ringtone volume needs to be put back to the levels of Nougat. No other bugs found yet, everything seems to be more responsive.
I agree. The ringtone is sometimes hardly noticeable. Fix it please.
Same here оn Nokia 8 !