argo-workflows: Cannot specify key for input artifact (without full artifact location)

Tested on 2.9.0-rc3

The official example works:

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: artifactory-repository-ref-
spec:
  entrypoint: main
  artifactRepositoryRef:
    key: minio
  templates:
    - name: main
      container:
        image: docker/whalesay:latest
        command: [sh, -c]
        args: ["cowsay hello world | tee /tmp/hello_world.txt"]
      outputs:
        artifacts:
          - name: hello_world
            path: /tmp/hello_world.txt

When switching to input it fails:

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: artifactory-repository-ref-
spec:
  entrypoint: main
  artifactRepositoryRef:
    key: minio
  templates:
    - name: main
      container:
        image: docker/whalesay:latest
        command: [sh, -c]
        args: ["cowsay hello world | tee /tmp/hello_world.txt"]
      inputs:
        artifacts:
          - name: hello_world
            path: /tmp/hello_world.txt

with

Failed to submit workflow: templates.entrypoint.steps[0].main templates.main-template inputs.artifacts.hello_world was not supplied

Another important point IMO. I don’t see any ways to specify the key during workflow creation (the location of your object within S3/bucket). My understanding is that artifactRepositoryRef can be used to setup default repositories and then can be reused within workflows specifying the location of the folder or file we want to use as inputs or outputs. Was that designed for that purpose?