Label inside scroll pane displays ellipses sometimes rather than full content

Expected behavior of attached program is to display some text without ellipsis.
However, as you re-size the scene, sometimes the text is shown with ellipsis and sometimes it is shown without.

Test case consists of a Label with wrapped text inside a StackPane with padding insets inside a ScrollPane fit to width.

To reproduce, run the attached program, scroll to the bottom of the text, then resize the scene to see the ellipses show and disappear.