message: pan_zoom example - event.movement_* warning
diff: @@ -75,6 +75,9 @@ fn artboard() -> impl Element {
  (dom_rect.width(), dom_rect.height())
  };
  view_box.update_mut(|view_box| {
  + // Warning: `movement_*` fails on iOS / touch screens.
  + // See workaround in the function `on_pointer_move_event`
  + // in the ability `PointerEventAware`.
  view_box.x -= f64::from(event.movement_x()) * (view_box.width / width);
  view_box.y -= f64::from(event.movement_y()) * (view_box.height / height);
  });
  