This was also the case for me - I had VMs without a display access password. I also had apps defined but nothing else running from the Dockge or Portainer apps.
I reverted back to 24.10, deleted the 25.04 boot environment, applied the workaround for the password (manually by editing each machine’s password through the GUI) and replied the 25.04.2 updated. This worked correctly and all my VMs now show up and are working.