Report canvas backgrounds changed when publishing report to service

Hello

I am confused with that new "feature"

I use the very basic JSON below, could someone please tell me what part should be changed to avoid the "black background" ?

Of course while maintening the current feature, that is to turn all the fonts' color to black by default.

Many thanks in advance :smileyhappy:

{
  "name": "Police noire",
  "foreground": "#000000",
  "tableAccent": "#000000",
  "visualStyles": {
    "*": {
      "*": {
        "*": [
          {
            "fontSize": 9,
            "fontFamily": "Segoe UI",
            "color": {
              "solid": {
                "color": "#000000"
              }
            }
          }
        ]
      }
    }
  }
}