Inconsistent `Copy/Cut` Behavior Between `Keyboard Shortcuts` and `Block Menu Actions`

[yogeshbhutkar]

Description

Splitting it from here: #68554 (comment)

The behavior of the Copy (Cmd/Ctrl + C) and Cut (Cmd/Ctrl + X) actions varies depending on whether they are triggered via keyboard shortcuts or the block menu items.

I believe the above condition occurs because the content is set as both text/plain and text/html within the writing flow, and this change appears to be intentional.

gutenberg/packages/block-editor/src/components/writing-flow/utils.js

Lines 60 to 62 in 73b8e2c

	event.clipboardData.setData( 'text/plain', toPlainText( serialized ) );
	event.clipboardData.setData( 'text/html', serialized );
	}

However, the Block Menu Items utilize the useCopyToClipboard hook, which only sets the content as text/plain (based on Clipboard.js). Therefore, to be consistent, we should set the data as both plain text and HTML on the clipboard to resolve this inconsistency.

gutenberg/packages/compose/src/hooks/use-copy-to-clipboard/index.js

Lines 46 to 52 in 73b8e2c

	const clipboard = new Clipboard( node, {
	text() {
	return typeof textRef.current === 'function'
	? textRef.current()
	: textRef.current || '';
	},
	} );

Please feel free to close this issue if it happens to be a duplicate of an existing issue.

Step-by-step reproduction instructions

1. Select one or more Paragraph blocks.
2. Copy or Cut using the block menu items from the three-dot menu.
3. Paste the clipboard content into a text editor.
   3.1. Observe that the clipboard contains the full block markup.
4. Now, repeat steps 1-3 using the keyboard shortcuts (Cmd/Ctrl + C or Cmd/Ctrl + X).
5. Observe that only the block content (not the full markup) is copied.

Screenshots, screen recording, code snippet

bug.mov

Environment info

• WordPress Version: 6.8-alpha-59361
• Gutenberg Version: Latest Trunk
• OS: macOS Sequoia

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure