regridDuration property
Duration of the re-grid morph when the segment LIST changes around a surviving selection (scrollable mode only): entering segments grow in (width, with a slight scale and fade riding it), leaving segments shrink out, and the survivors glide — anchored so the selected segment does not move on screen.
Defaults to Duration.zero — the list snaps, and the morph is opt-in. There is no platform behavior to mirror here (native segmented controls do not scroll), so a host's control should not start animating just because the package was upgraded. Reduce Motion always snaps.
Implementation
final Duration regridDuration;