Interesting note - may be it will help someone: after upgrading from 23.10.1 to 23.10.2 I got "Failed to start kubernetes cluster for Applications: server is not initialized yet" and all apps are in "deploying" mode. Waiting for over an hour and reboot did not help.
What had solved the issue - under "Kubernetes Advanced settings" disable GPU support and save. This will restart service and all apps came back up. Re-enabling GPU support will re-deploy app that is waiting for GPU.
What had solved the issue - under "Kubernetes Advanced settings" disable GPU support and save. This will restart service and all apps came back up. Re-enabling GPU support will re-deploy app that is waiting for GPU.