On macOS you can type OPTION-RETURN in a Cue Point text field to advance to additional lines, as if it were a multiline text box.
- Edit a cue point name
- Type in anything, then OPTION-RETURN.
- use cursors keys to move up and down within the text area
The label still only shows the first line so this is not really a huge issue. Just something maybe to clean up in the code. If anyone cares.