Steps to reproduce

1. Open a Dialog with a textField and a JS-Dialog field from root in a content app
2. Try to capture the change event like in the code example
3. Change something in the textField

      window.addEventListener(
        "message",
        function (event) {
          console.log(event.data.action);
          if (event.data.action === "init") {
            correlationId = event.data.correlationId;
            console.log(event.data);
          } else if (event.data.action === "change") {
            textDescription = event.data.state.formFields.textDescription;
            console.log(textDescription);
          }
        },
        false
      ); 

Expected results

The change event should be fired and the text should appear in the console.

Actual results

The change event is not fired.

Workaround

Putting the dialog in the folder section of the content app seems to work. So it feels like the problem is the root context.

Development notes