Custom text insertion cannot be undone

Phenomenon

When using preventDefault() and implementing custom text insertion in Chrome, those operations cannot be undone using Ctrl+Z. The undo stack does not include custom text insertions.

Reproduction example

1. Implement custom text insertion with preventDefault()
2. Insert some text
3. Press Ctrl+Z to undo

Observed behavior

• Text insertion is not undone
• Browser’s undo stack does not include the operation
• User cannot undo custom text insertions
• Undo/redo functionality is broken for custom features

Expected behavior

• Custom text insertion should be undoable
• Undo stack should include all operations
• Ctrl+Z should work for custom insertions
• Redo should also work

Browser Comparison

• All browsers: Custom operations not in undo stack
• This is expected when using preventDefault()
• Custom undo/redo implementation needed

Notes and possible direction for workarounds

• Implement custom undo/redo stack
• Save state before each text insertion
• Restore state on undo
• Handle Ctrl+Z and Ctrl+Y manually