Word Wrap is slightly different between Hierarchy and other modes.
Word Wrap with Dropdown, Filter, and Observer modes
Default value: Off
The option allows you to break long words and wrap them in multiple lines. It is a word processing function that automatically transfers a word for which there is not enough space from the end of one line of text to the beginning of the next.
Word Wrap with Hierarchy
Default value: Truncate
The word-wrap option in Hierarchy mode allows you to choose how to display long node names in two ways:
This truncates node names to keep them on one line and add the ellipsis at the end.
This breaks node names across multiple lines in case the width of the visual is less than their length.