Ctrl+Shift+V / Cmd+Shift_V Paste Without Formatting Shortcut Not Working

[mishenThakshana]

Preflight Checklist

• I agree to follow the Code of Conduct
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Describe the bug
Ctrl+Shift+V / Cmd+Shift+V (Paste without formatting) shortcut does not work in draw.io Desktop. The
draw.io web editor in the renderer process intercepts the keyboard event before Electron's menu
accelerator (pasteAndMatchStyle role) can handle it. On Windows/Linux, the application menu is set to
null, so the shortcut is never registered at all.

To Reproduce

1. Copy formatted text from a browser or Word document
2. Open draw.io Desktop
3. Double-click a shape to enter text editing mode
4. Press Ctrl+Shift+V (Windows/Linux) or Cmd+Shift+V (macOS)
5. Text is pasted with formatting intact, or nothing happens

Expected behavior
Text should be pasted as plain text without formatting.

draw.io version:
29.6.6

Desktop:

• OS: Windows 11 / macOS
• App: draw.io Desktop (Electron)

Root cause
In src/main/electron.js, the Edit menu with { role: 'pasteAndMatchStyle' } is only created for macOS.
Even on macOS, the draw.io web editor's JavaScript event handlers intercept the keypress before
Electron's menu accelerator fires.

Proposed fix
Added a before-input-event listener on mainWindow.webContents that intercepts Ctrl/Cmd+Shift+V at the
Electron level — before the event reaches the renderer — and calls webContents.pasteAndMatchStyle()
directly. This works on all platforms.

Branch with fix: https://github.com/mishenThakshana/drawio-desktop/tree/fix-paste-plain-text-shortcut

[draw-io-triage-bot]

👋 Thank you for opening this issue!

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Summary: The user reports that the Ctrl+Shift+V (Paste without formatting) keyboard shortcut does not work in draw.io — the browser or OS intercepts the event before the application can handle it. They have implemented a fix using the Clipboard API in a personal fork and are offering to submit a pull request.

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📝 Additional Information Needed

To help us investigate this more effectively, could you please provide:

• draw.io version: The user left the version field as a placeholder ('put your version here'). The specific version from Help->About is needed to understand if this is already addressed.
• platform clarification: The user mentions both 'Chrome (if web version) / Desktop app' but doesn't specify which platform they actually tested on. The linked branch is for drawio-desktop, suggesting the desktop app, but clarification would help.
• actual behavior clarification: The user says 'Text is pasted with formatting or nothing happens' — it would help to know which of these two outcomes actually occurs, and whether it differs between the web and desktop versions.

We also have some questions:

• Can you confirm the exact draw.io version you tested this on (from Help -> About)?
• Are you reporting this for the desktop app, the web app (app.diagrams.net), or both?
• When you press Ctrl+Shift+V, does the text paste with formatting retained, or does nothing happen at all? Or does it depend on context?
• Have you tried the menu option Edit -> Paste as Plain Text to confirm that the functionality itself works and only the keyboard shortcut is broken?
• Note that PRs for draw.io should typically be submitted to the official jgraph/drawio repository rather than a personal fork. Are you aware that the core editor code is in the jgraph/drawio repo (and the mxGraph/Graph editor JS), and that drawio-desktop is primarily the Electron wrapper?

📋 Bug Report Template

**Environment:**
- draw.io version: [e.g., web app / desktop 24.x.x / Confluence plugin]
- Browser (if web): [e.g., Chrome 120, Firefox 121]
- OS: [e.g., Windows 11, macOS 14, Ubuntu 22.04]

**Steps to Reproduce:**
1. Go to ...
2. Click on ...
3. See error

**Expected Behavior:**
What you expected to happen.

**Actual Behavior:**
What actually happened.

**Screenshots/Files:**
If applicable, add screenshots or attach the .drawio file.

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_{🤖 This is an automated response to help with initial triage. A human maintainer will review this issue. If you've provided all the requested information, no further action is needed - we'll get back to you soon!}