vue-chartjs vue-class-component chartOptions not working

Question

I am busy migrating to [email protected] from [email protected] and found that during the upgrade for some reason vue-chartjs chartOptions is not working.

I defined my lineChart like this in html:

<line-chart v-if="!loading" :chartData="chartData" :options="chartOptions"/>

and in my script I defined the chartOptions getter like this:

  get chartOptions(): ChartOptions {
    return {
      responsive: true,
      maintainAspectRatio: true,
      plugins: {
        legend: {
          display: false,
        },
      },
    }
  }

my chartData getter is defined in a similar manner and I cannot work out why the chartOptions are not being detected properly by vue-chartjs