[BUG] negative values shows weird slices

[EDM115]

config :

{
  "staticFilters": [],
  "datasets": [
    {
      "href": "http://localhost:5888/data-fair/api/v1/datasets/accidents-velos",
      "title": "Accidents de vélo",
      "id": "accidents-velos"
    }
  ],
  "dataType": {
    "type": "metricBased",
    "metricType": "min",
    "sort": "-metric",
    "groupBy": {
      "type": "value",
      "field": [
        "numVehicules",
        "secuexist",
        "lum",
        "nbv"
      ]
    }
  },
  "colorscheme": {
    "defaultColor": "#F35858",
    "colors": [
      {
        "color": "#828282"
      }
    ]
  },
  "showTitle": false,
  "title": ""
}