Extra whitespace and line breaks being inserted on paste in Windows.

[kjrocker]

Describe the bug

Extra whitespace and line breaks being inserted on paste in Windows. It's a new line in front, and 2 new lines afterwards. It doesn't matter if I'm copying from the middle of the line, or the middle of a word, any paste creates the extra space.

To Reproduce

1. Use Windows
2. Use a markdown widget.
3. Attempt to copy-paste text into the widget.
4. Note the extra line breaks.

Expected behavior

It should paste the text as expected, only adding new lines if they were copied.

Screenshots

Video attached.

Applicable Versions:

• Decap CMS version: decap-cms@^3.1.2
• Git provider: Github
• OS: Windows 10
• Browser version: Current versions of Chrome, Firefox, Edge, Brave.

CMS configuration

backend:
  name: git-gateway
  repo: <repo>
  branch: main
  squash_merges: true
local_backend: true
publish_mode: editorial_workflow
show_preview_links: true

media_folder: "src/assets/uploads"
public_folder: "src/assets/uploads"
collections:
  - name: "games"
    label: "Game Reviews"
    folder: "src/content/game"
    create: true
    media_folder: "media"
    public_folder: "media"
    preview_path: game/{{slug}}
    fields:
      - { label: "Title", name: "title", widget: "string" }
      - { label: "Description", name: "description", widget: "string" }
      - { label: "Title Image", name: "image", widget: "image" }
      - {
          label: "Featured?",
          name: "featured",
          widget: "boolean",
          default: false,
        }
      - { label: "Body", name: "body", widget: "markdown" }
      - { label: "Date", name: "date", widget: "datetime", default: "{{now}}" }
      - {
          label: "Author",
          name: "author",
          widget: "hidden",
          default: "Janneke",
        }
  - name: recipes
    label: "Recipes"
    folder: "src/content/recipe"
    create: true
    media_folder: "media"
    public_folder: "media"
    preview_path: around-the-world-in-vegan-ways/{{slug}}
    fields:
      - { label: "Title", name: "title", widget: "string" }
      - { label: "Country", name: "description", widget: "string" }
      - { label: "Featured Image", name: "image", widget: "image" }
      - {
          label: "Category",
          name: "category",
          widget: "select",
          required: true,
          options: [
            { value: "breakfast", label: "Breakfast" },
            { value: "sandwich", label: "Sandwich" },
            { value: "sides", label: "Sides" },
            { value: "entrees", label: "Entrees" },
            { value: "desserts", label: "Desserts" },
          ],
        }
      - {
          label: "Recipe",
          name: "recipe",
          widget: "markdown",
          default: "## Ingredients\n\n- First\n\n## Instructions\n\n1. First",
        }
      - { label: "Body", name: "body", widget: "markdown" }
      - {
          label: "Author",
          name: "author",
          widget: "hidden",
          default: "Janneke",
        }
      - { label: "Date", name: "date", widget: "datetime", default: "{{now}}" }

  - name: "blog"
    label: "Blog"
    folder: "src/content/blog"
    create: true
    media_folder: "media"
    public_folder: "media"
    fields:
      - { label: "Title", name: "title", widget: "string" }
      - { label: "Description", name: "description", widget: "string" }
      - {
          label: "Author",
          name: "author",
          widget: "string",
          default: "Janneke",
        }
      - { label: "Date", name: "date", widget: "datetime" }
      - { label: "Featured Image", name: "image", widget: "image" }
      - { label: "Image Alt Text", name: "imageAlt", widget: "string" }
      - { label: "Body", name: "body", widget: "markdown" }

Additional context

Screen.Recording.2025-01-06.125842.mp4

[martinjagodic]

may be caused by #7290

[kjrocker]

This interesting thing is that it's happening to plain text, but ONLY on windows. This doesn't duplicate in Fedora at least.