Manjaro Gnome, new install, no notification sound

I am new to gnome, but i just can't believe there is no obvious way to get the calendar alert notification to make any sound?

Its a new install, i have changed nothing.

setting / sound /

All volumes are full, the correct output device, I can select the 4 alert sounds at the bottom and they are audible. Moving the volume slider on the tray menu does make a bing sound.

Settings / notifications /

Do not disturb is OFF, I have check all of these applications and they all have the "sound alerts" switched on.

I am 100% sure i am setting the calender alert correctly (to give a popup & sound) it shows the popup but no sound?