Users shouldn't be able to cut from and paste into editor when it's in read-only mode
In read-only mode, a user can still:
- paste into the editor, by clicking inside the editor, then pressing cmd/ctrl + v. The copied text will be inserted wherever the user clicked, even though there's no active cursor visible
- cut text out of the editor, by click-and-dragging to highlight text, then pressing cmd/ctrl + x. This removes the highlighted text. The user can then save the changes.
When the editor is in read-only mode, it shouldn't allow pasting into it or cutting from it.