Scavenging some other posts that appeared today, I have found the solution to my problem:
I also found the a2dp-app-osmc package on my Vero4k. I remember installing it a (long) while ago in an attempt to make my bluetooth headphones work properly.
So:
sudo apt-get remove --purge a2dp-app-osmc
sudo apt autoremove
solved the sound issue described in the topic above.
Everything back to normal, carry on 
P.S.: Later tonight we’ll see if bluetooth works better than before the update 