Hello Umbraco community

I'm having some trouble with a custom property editor we made. The idea was to extend the default checkboxlist property editor to have its items translated.

Here is the package.manifest

{
  "propertyEditors": [
    {
      "alias": "Wavenet.TranslatedCheckboxList",
      "name": "Translated Checkbox List",
      "isParameterEditor": true,
      "editor": {
        "view": "~/App_Plugins/TranslatedCheckboxList/Views/TranslatedCheckboxList.html",
        "valueType": "STRING"
      },
      "prevalues": {
        "fields": [
          {
            "label": "Add checkbox item",
            "description": "add an item to the checkbox list",
            "key": "viewItems",
            "view": "~/Umbraco/Views/PrevalueEditors/MultiValues.html"
          }
        ]
      }
    }
  ],
  "javascript": [
    "~/App_Plugins/TranslatedCheckboxList/TranslatedCheckboxList.controller.js"
  ]
}

In backoffice everything is working well. I can check values, save, edit another document, come back and my values are still there.

The problem comes in a View when I want to get the values stored by the custom checkbox list (by doing a Content.Value<>

I took a look in the database and it confirmed what I though (see the screenshot)

I took a look on how the values where stored by the default umbraco checkboxlist and there is no "\r\n" added (see the screenshot)

So.... Am I missing something?