Highcharts Axis Min Bug

HTML

<script src="https://code.highcharts.com/stock/highstock.js"></script>

<div id="container" style="height: 300px"></div>

JavaScript

let chart = Highcharts.chart('container', {
  "xAxis": [{
    "tickColor": "#444444",
    "tickWidth": "0.0",
    "lineColor": "#FFFFFF",
    "lineWidth": "0.0",
    "gridLineColor": "rgba(102,102,102,0.1)",
    "gridLineDashStyle": "none",
    "gridLineWidth": 0,
    "minorGridLineColor": "rgba(102,102,102,0.1)",
    "opposite": false,
    "showFirstLabel": true,
    "showLastLabel": true,
    "startOnTick": false,
    "endOnTick": false,
    "labels": {
      "enabled": true,
      "style": {
        "color": "#444444",
        "fontSize": "20px",
        "whiteSpace": "nowrap",
        "fontFamily": "Myriad Pro",
        "fontWeight": "normal",
        "fontStyle": "normal"
      }
    },
    "title": {
      "text": "",
      "align": "middle",
      "style": {
        "color": "#444444",
        "fontSize": "20px",
        "fontFamily": "Myriad Pro",
        "fontWeight": "normal",
        "fontStyle": "normal"
      }
    },
    "type": "datetime"
  }],
  "yAxis": [{
    "min": false,
    //"min": 1.25,
    "max": "1.35",
    "tickColor": "#444444",
    "tickWidth": "0.0",
    "lineColor": "#FFFFFF",
    "lineWidth": "0.0",
    "gridLineColor": "rgba(102,102,102,0.2)",
    "gridLineDashStyle": "solid",
    "gridLineWidth": "1.0",
    "minorGridLineColor": "rgba(102,102,102,0.2)",
    "opposite": true,
    "offset": "100",
    "showFirstLabel": true,
    "showLastLabel": true,
    "startOnTick": false,
    "endOnTick": false,
    "labels": {
      "enabled": true,
      "style": {
        "color": "#444444",
        "fontSize": "20px",
        "whiteSpace": "nowrap",
        "fontFamily": "Myriad Pro",
        "fontWeight": "normal",
        "fontStyle": "normal"
      },
      "align": "left"
    },
    "title": {
      "text": "",
      "align": "middle",
      "style": {
        "color": "#444444",
        "fontSize": "20px",
        "fontFamily": "Myriad Pro",
        "fontWeight": "normal",
        "fontStyle": "normal"
      }
    }
  }],
  "series":...