Blank result of chartjs macro when using the inplace editor

To reproduce:

• Paste the following content in wiki mode and save:

  {{chartjs type="pie"
    options="{~"backgroundColors~": [~"#ff16e8~", ~"#0018f4~",~"#065d00~"]}"}}
  {
    "labels": [
      "Bug",
      "Improvement",
      "New Feature"
    ],
    "datasets": [{
      "label": "CKEditor",
      "data": [23, 17, 5]
    }, {
      "label": "Diagram",
      "data": [34, 11, 6]
    }]
  }
  {{/chartjs}}

• Edit using the inplace editor
• Notice the blank result: