RPi4 and USB3.0 wierdness

I’m having problems with my Volumio setup

Everything was working fine but the last two updates (?) have killed it…

Volumio boots up AOK but won’t now see the USB HDD.
Update or Rescan sometimes shows a few files which refuse to play.

I can IP into the RPi and see all the disk, add or delete tracks etc. so it’s not a RPi hardware problem.

If I swap the RPi4 for a RPi3B everything works AOK again.
This setup used to work without any problems.

OSA Dacberry Plus
WD 1TB 2.5" HDD
Benfei USB3.0 SATA adapter
Volumio 2.6713