Flutter Syncfusion Problem with TrackballBehavior

I am using Syncfusion for Flutter to display the charts in my Application.

I am trying to show a Trackball, where its content is to be displayed right in the middle of the chart, but right now, this is what I am getting:

1

The code for for the Trackball is the following,

TrackballBehavior trackballBehavior() {
  return TrackballBehavior(
    enable: true,
    activationMode: ActivationMode.singleTap,
    shouldAlwaysShow: true,
    tooltipDisplayMode: TrackballDisplayMode.groupAllPoints,
    tooltipAlignment: ChartAlignment.center,
    tooltipSettings: const InteractiveTooltip(
      enable: true,
    ),
  );
}

I have checked the Syncfusion docs, but I am not being able to find anything that can help with this matter.

Any help would be appreciated