ScatterChart tooltips disappear immediately after pressing

[deezee30]

Describe the bug
For ScatterChart widgets, long-pressing on any spots shows a default tooltip overlay for around 200ms and then disappears. Dragging to the next spot does not show a new tooltip and the chart has to be long-pressed again. Subsequent presses also only remain for a minor period. In other words, the chart gets automatically unpressed shortly after being pressed.

This has been tested on emulated and physical Android phones. This behaviour was also tested on BarChart and LineChart widgets but did not produce this issue.

To Reproduce
This minimally reproducible widget causes this behaviour. Simply call it anywhere in the app.

class TestScatterChart extends StatelessWidget {
  const TestScatterChart({super.key});

  @override
  Widget build(BuildContext context) {
    return AspectRatio(
      aspectRatio: 1.8,
      child: Card(
        child: ScatterChart(
          ScatterChartData(
            scatterSpots: List.generate(
              10,
              (index) => ScatterSpot(
                index.toDouble(),
                index.toDouble(),
              ),
            ),
          ),
        ),
      ),
    );
  }
}

Screenshots
Not applicable - screenshots don't capture the process of tooltips disappearing in scatter charts.

Versions

• Flutter stable v3.7.11
• FlChart versions v0.55.0 through to v0.62.0