No circle is drawn on a line chart when there is only one data. (version 3.2.2 only)

[mock123]

What did you do?

I updated the Charts library from 3.2.1 to 3.2.2.

What did you expect to happen?

When a line chart has just "one" entry data, the chart shows a circle to indicate the data.

v3.2.1 (with highlight / It draws a circle. correct.)

v3.2.1 (without highlight / It draws a circle. correct.)

What happened instead?

No circle was drawn on the chart.
*chartDataSet.drawCirclesEnabled is always set as TRUE.

The problem happens when there is only "one" entry.
(But if there are more than two entries, it works fine.)

v3.2.2 (with highlight / No circle was drawn. wrong)

v3.2.2 (without highlight / No circle was drawn. wrong)

*When I switch it back to the version 3.2.1, it draws a circle (expected behavior).

Charts Environment

Charts version/Branch/Commit Number: 3.2.2 (latest version)
Xcode version: 10.1 (latest version)
Swift version: 4.2.1 (latest version)
Platform(s) running Charts: iOS
macOS version running Xcode: Mojave 10.14.3 (latest version)

Sample Code

let chartDataSet = LineChartDataSet(values: dataEntries, label: nil)
chartDataSet.setCircleColor(.blue)
chartDataSet.drawCirclesEnabled = true
chartDataSet.circleRadius = 1.0

lineChartView.data = LineChartData(dataSet: chartDataSet)

FYI

The issues/fixes below may be related to this problem.
#3798
#3164

[lorenzOliveto]

I'm experiencing the same issue, also, adding more points the first circle is not displayed.

[staticVoidMan]

Actually, the first point doesn't have a circle. It doesn't matter if there's only one data point or more.

[jjatie]

Resolved by #3891