Confirmed! It’s the SPI CS issue. I downgraded to kernel 4.19 that doesn’t have the issue using this command:
sudo rpi-update e1050e94821a70b2e4c72b318d6c6c968552e9a2
Reboot, and everything is working again! 
I changed the build system to use the latest Raspberry Pi OS with kernel 4.19 and tomorrow’s build should be functional. Cross fingers!!
Thanks a lot!