When $GITHUB_STEP_SUMMARY is added multiple times in a composite action, only the last step seems to be reflected

[suzuki-shunsuke]

This is an issue of GITHUB_STEP_SUMMARY.

When $GITHUB_STEP_SUMMARY is added multiple times in a composite action,
only the last step seems to be reflected.

https://github.com/suzuki-shunsuke/test-github-action/actions/runs/3028352492

https://github.com/suzuki-shunsuke/test-github-action/blob/699af0126acef631209b988191102133ed96fa94/.github/workflows/test-action.yaml#L11

      - uses: ./.github/actions/step-summary-action

https://github.com/suzuki-shunsuke/test-github-action/blob/699af0126acef631209b988191102133ed96fa94/.github/actions/step-summary-action/action.yaml#L3-L9

name: step summary
description: step summary
runs:
  using: composite
  steps:
    - shell: bash
      run: echo foo >> "$GITHUB_STEP_SUMMARY"
    - shell: bash
      run: echo bar >> "$GITHUB_STEP_SUMMARY"

On the other hand, when $GITHUB_STEP_SUMMARY is added multiple times in a job without composite action, all steps are reflected properly.

https://github.com/suzuki-shunsuke/test-github-action/blob/699af0126acef631209b988191102133ed96fa94/.github/workflows/test.yaml#L9-L14

jobs:
  foo:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - shell: bash
        run: echo foo >> "$GITHUB_STEP_SUMMARY"
      - shell: bash
        run: echo bar >> "$GITHUB_STEP_SUMMARY"

[suzuki-shunsuke]

I created a support ticket about this issue from https://support.github.com/ , then this issue has been solved.

Hi Shunsuke,

Thank you greatly for your patience here.

Our engineering team has confirmed that this issue behavior is now fixed and deployed out.

Please let us know if you are seeing any additional unexpected behavior!

Best,

Arthur
GitHub Support