Can not delete background-image:url of body after an import

GrapesJS version

• I confirm to use the latest version of GrapesJS

What browser are you using?

Chromev93

Reproducible demo link

https://grapesjs.com/demo.html

Describe the bug

How to reproduce the bug?

1. Import the following code

<style>* {
  box-sizing: border-box;
  }
  body {
    margin: 0;
  }
  *{
    box-sizing:border-box;
  }
  body{
    margin:0;
    background-image:url('./img/team3.jpg');
    background-repeat:repeat;
    background-position:left top;
    background-attachment:scroll;
    background-size:auto;
  }
</style>

2. Now try to delete the background-image: url
3. It is not possible

What is the expected behavior? After clicking the body, opening the "open style manager" and then opening "Decorations", "Background" should indicate an layer with the image. Which should then be possible to be deleted.

What is the current behavior? After clicking the body, opening the "open style manager" and then opening "Decorations", "Background" should indicate an layer with the image. It is not shown and therefore can not be deleted

If is necessary to execute some code in order to reproduce the bug, paste it here below: No it's not

Code of Conduct

• I agree to follow this project's Code of Conduct