Node-red app hangs immediately

I want to use Node-RED container running on k3s cluster on 64-bit windows 10 PC. I create a deployment with the latest image from dosckerhub on windows 10 64-bit platforms (tried on 2 private PCs).
Once the pod is up, I proceed to browser and try deploying simple flow:

Worth to mention the same flow deploys almost immediately on my peer's laptop, also win64.
Unfortunately it just hangs forever and never gets deployed. Does not depend on browser or whether I add the persisten volume to the pod or not.
In short words, the image starts correctly but hangs while trying to deploy. Any help appreciated!

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