BUG: In 3.5.1 grid.y.show = true breaks if there is a y2 axis but no y axis

Description

In version 3.5.1, when a chart:

• has a y2 axis
• does NOT have a y axis
• has grid.y.show = true

the generation breaks after drawing the axes:

Conceptually this makes sense, but it did NOT happen in version 3.4.1.

Steps to check or reproduce

The following chart configuration produces the bug:

{
  "bindto": "#lineChart", 

  "data": {
    "rows": [
      [ "Bar", "Line_1", "Line_2" ],
      [ 0.5, 2, 1 ],
      [ 3, 1, 2 ],
      [ 2, 1, 3 ],
      [ 1, 2.5, 0.5 ],
      [ 2, 1, 0 ],
      [ 1.5, 2, 1 ],
      [ 0, 2, 1 ],
      [ 0.5, 1, 3 ],
      [ 1, 1, 2 ],
      [ 2, 1, 1 ],
      [ 0.5, 1, 2 ],
      [ 1, 0.5, 3 ]
    ],
    "types": {
      "Line_1": "line",
      "Line_2": "line",
    },
    "type": "bar",
    "axes": {
      "Bar": "y2",
      "Line_1": "y2",
      "Line_2": "y2"
    }
  },
  "axis": {
    "x": {
      "type": "category",
      "categories": [ "gen", "feb", "mar", "apr", "mag", "giu", "lug", "ago", "set", "ott", "nov", "dic" ],
      "clipPath": false
    },
    "y": {
      "show": false
    },
    "y2": {
      "show": true,
      "padding": { "bottom": 0 },
      "min": 0,
      "max": 3
    }
  },
  "grid": {
    "y": {
      "show": true // this breaks the chart
    }
  }
}

[netil]

Next release will out on this month.

[netil]

Hi @m-gallesio, it seems duplicated and already fixed(with the issue you mentioned). From the latest build from the master, it renders without issue.

Try with the nightly build

• https://github.com/naver/billboard.js#nightly-version