A commit created by Dependabot contains a file treating unchanged parts as changed in the diff

[Takym]

Is there an existing issue for this?

• I have searched the existing issues

Package ecosystem

GitHub Actions

Package manager version

No response

Language version

No response

Manifest location and content before the Dependabot update

https://github.com/YigtyORG/TakymLib/tree/master/.github/workflows

dependabot.yml content

https://github.com/YigtyORG/TakymLib/blob/master/.github/dependabot.yml

Updated dependency

No response

What you expected to see, versus what you actually saw

• Actual Behaviour: https://github.com/YigtyORG/TakymLib/pull/207/files
  • It seems like the whole file changed.
  • A part of the diff: (actual diff shows whole file changed)

    -    steps:
    -    - uses: actions/checkout@v3
    -      with:
    -        submodules: recursive
    +    steps:
    +    - uses: actions/checkout@v4
    +      with:
    +        submodules: recursive

  • Also, this behavior makes conflicts occur when merging in the local repository.
  • When I merged Dependabot PR on the web, in the local repository, the git command recognized the file concerned as changed even if the file has no change, and I cannot discard those "no change" changes.
• Expected Behaviour
  • Diff should show only changed lines:

        steps:
    -    - uses: actions/checkout@v3
    +    - uses: actions/checkout@v4
          with:
            submodules: recursive

  • Also, conflicts should not occur on lines where nothing has changed.

Native package manager behavior

No response

Images of the diff or a link to the PR, issue, or logs

• Bump actions/setup-dotnet from 3 to 4 YigtyORG/TakymLib#204
• Bump actions/upload-artifact from 3.1.0 to 4.3.2 YigtyORG/TakymLib#205
• Bump actions/checkout from 3 to 4 YigtyORG/TakymLib#207
• Bump github/codeql-action from 2 to 3 YigtyORG/TakymLib#208
• Bump NuGet/setup-nuget from 1.1.1 to 2.0.0 YigtyORG/TakymLib#206 - sometimes working correctly

Smallest manifest that reproduces the issue

No response

[Takym]

This problem still occurs, and I provide additional information on what has happened recently: If I switch into Dependabot's branch in a local repository, files changed by Dependabot are shown on the changes list of the source manager of Visual Studio Code. However, there seems to be no difference between before and after the change. This behavior may not be correct because the changes have already been committed. Also, I cannot discard changes; when I click the discard button, changes still appear.

Edit: "No change" changes are stuck on the changes list.

[Takym]

I have checked on Visual Studio 2022, but a warning about encoding or end-of-line code was not issued. So, I cannot guess the cause.