Crosshair feature for Zing Chart is a processor leak

When I enable the crosshair feature in my chart, everything works fine in Chrome 56, but when I updated Chrome to 57 (even now chrome 58 and ZingChart 2.6.0), the CPU usage always exceeds 25% when dropping the chart, for example to see the crosshair ... When I have 2 diagrams, the CPU load goes up to 99% and the browser slows down and crashes quickly.

I tried to disable all features to find out what is the cause of this problem and when I disable the crosshairs the CPU usage is normal again. And if I disable everything except the crosshair function, the same cpu grabbing effect is observed.

The only way to free up resources is to end the tab.

Here is my code:

var dataChart = {
  id: "ShSDbePYhAxC",
  data: {
    type: "area",
    "crosshair-x": {
      "plot-label": {
        text: "The %t Series has a value of %v."
      }
    },
    gui: {
      behaviors: [
        {
          id: "Reload",
          enabled: "none"
        }
      ],
      contextMenu: {
        customItems: [
          {
            function: "zingAlert()",
            id: "zingAlert",
            text: "zing Alert"
          }
        ]
      }
    },
    item: {
      angle: -30
    },
    legend: {
      "background-color": "white",
      "border-color": "black",
      "border-radius": "5px",
      "border-width": 2,
      layout: "1xauto",
      padding: "10%",
      x: "12%",
      y: "90%"
    },
    plot: {
      alphaArea: 1,
      aspect: "spline",
      "bar-width": "15px",
      "contour-on-top": false,
      lineWidth: "2px",
      stacked: true,
      marker: {
        visible: false
      },
      tooltip: {
        visible: false
      }
    },
    plotarea: {
      "margin-bottom": "23%",
      "margin-left": "dynamic"
    },
    "scale-x": {
      item: {
        angle: -30
      },
      labels: [
        "Name0", "Name1", "Name2", "Name3", "Name4"
      ]
    },
    "scale-y": {
      label: {
        "font-size": "15%",
        text: "Number Of Visitors"
      }
    },
    series: [
      {
        text: "Text A",
        values: [11111, 222222, 3333333, 444444, 55555]
      },
      {
        text: "Text B",
        values: [6666, 777777, 88888, 99999, 12121212]
      }
    ]
  },
  height: 550,
  output: "canvas",
  width: "100%",
}