Parent pipeline status "failed" when child has only manual jobs

Summary

When a parent pipeline triggers a child pipeline which has only manual steps and has the strategy: depend attribute, the parent pipeline is marked as failed.

When the child pipeline starts, it works as expected updating the status to the parent:

Similar issues

• #332310 (closed)

What is the expected behavior?

As it's using strategy: depend. I would expect the parent pipeline status to reflect the child pipeline status, so the parent status would be "waiting for manual action" instead of "failed".

Steps to reproduce

In .gitlab-ci.yaml:

stages:
  - build
  - deploy


configuration-build:
  stage: build
  script:
    - |
      cat > deploy-child-pipeline.yml <<EOL
      manual-child-job:
        stage: deploy
        when: manual
        script:
          - echo "manual child job"
      EOL
  artifacts:
    paths:
      - deploy-child-pipeline.yml
      
deploy-trigger:
  stage: deploy
  trigger:
    include:
      - artifact: deploy-child-pipeline.yml
        job: configuration-build
    strategy: depend

This will produce the following: