No Sound in Shotcut

I’ve been using Shotcut pretty extensively for years. The volume control is right. The filters are right but, after upgrading to version 18.03.30, I’m not getting any sound at all. This is even in videos that were previously edited with Shotcut. I’ve tried the git version and I have the same problem.

My system:

Intel I5 with 16GB RAM
Arch Linux Kernel 4.15.13-1
Audio is ALSA not Pulseaudio

Any ideas would be appreciated.