Second step in manual pipeline cannot be executed

Summary

I have a pipeline with 2 steps, both set to when: manual. It is impossible to execute the second step. The "Play" Button is not displayed in the interface.

Once I add an automatic step as a first step to the pipeline, I can execute the two following manual jobs in any order.

Steps to reproduce

Create a new project and add a .gitlab-ci.yml with the following contents:

stages:
  - build
  - deploy

Build Project:
  stage: build
  script:
    - echo "building project..."
  when: manual

Deploy Project:
  stage: deploy
  script:
    - echo "deploying project..."
  when: manual

Got to pipelines and click "Play" on the "Build Project" Job.

What is the current bug behavior?

The first Job can be executed via the "Play" Button. The second Job does not have a "Play" Button.

What is the expected correct behavior?

The second Job should have a "Play" Button as well.

Workaround

Add a "dummy" step to the pipeline which is triggered automatically in the .gitlab-ci.yml

stages:
  - dummy
  - build
  - deploy

Dummy Step:
  stage: dummy
  script:
    - echo "dummy"

Build Project:
  stage: build
  script:
    - echo "building project..."
  when: manual

Deploy Project:
  stage: deploy
  script:
    - echo "deploying project..."
  when: manual

Then, the "Dummy" Step will run automatically and both manual Jobs will have the "Play" Button.

Version Info

GitLab Community Edition 9.1.4 fed799ae

I can't seem to reproduce this on 9.5.4 (current version on GitLab.com) https://gitlab.com/godfat/test/pipelines/11679879

We no longer maintain 9.1. Is it possible for you to upgrade? Close for now. Please reopen if you could reproduce this on newer version.

closed

@godfat Just tested on 9.5.4, the problem no longer occurs.