Rollover label positioning issue

While moving the rollover cursor, if the number of series under the cursor increases, the rollover cursor labels become wrongly positioned. This ViewController subclass Swift example reproduces the problem.

import UIKit
import SciChart


class ViewController: UIViewController {
    // Surface is added in Storyboard
    @IBOutlet weak var surface: SCIChartSurface!
    override func viewDidLoad() {
        super.viewDidLoad()

        let xAxis = SCINumericAxis()
        let yAxis = SCINumericAxis()
        xAxis.visibleRange = SCIDoubleRange(min: 0, max: 260)
        yAxis.visibleRange = SCIDoubleRange(min: -5, max:12)
        yAxis.autoRange = .never

        self.surface.chartModifiers.add(items: SCIRolloverModifier())
        self.surface.xAxes.add(xAxis)
        self.surface.yAxes.add(yAxis)
        self.surface.renderableSeries.add(items:
            renderableSeries( 10...50, 10, .red),
            renderableSeries(150...250, 8, .green),
            renderableSeries( 10...100, 2, .cyan),
            renderableSeries(200...250, 0, .orange),
            renderableSeries( 10...250, 5, .white)
        )
    }
    func renderableSeries(_ xValues:ClosedRange<Int>, _ yValue:Double, _ color:UIColor) -> SCIFastLineRenderableSeries {
        let series = SCIXyDataSeries(xType: .double, yType: .double)
        xValues.forEach { series.append(x: $0, y: yValue ) }
        let rSeries = SCIFastLineRenderableSeries()
        rSeries.dataSeries = series
        rSeries.strokeStyle = SCISolidPenStyle(color: color, thickness: 4)
        return rSeries
    }
}