Motorola Moto G6 Plus notification sound low or non audible

[krede99]

I just got one of these and are having issues with notification sound being very low or not being played at all.
I have opened a case with Motorola support - they tell me that this is by design and notification sounds are increasing volume and because of this the notification sound is probably over before the volume has increased enough to be audible.
Anyone have a workaround for this?
Motorola support suggests to choose notification sounds that have a longer duration ?

I found that if the screen is on or the device is playing some kind of media, notification sounds are working fine.

 

[krede99]

Finally Motorola support closed the case telling me the solution is to select notification tones that have a longer duration so the volume can get turned up before they are over ?
and by this forcing their costumers to fix the issue by themselves