"Create a new block" link not showing in Content Area in Commerce

Hello,

I am using some content areas in commerce, but I only can drag and drop blocks on them. I am not able to see the "create a new block" link, like it appears in CMS.

My CMS versions are:

• CMS: 9.8.2
• CMS.UI: 9.4.4

I tried using the following dojo template, and I was able to see the link, but when I clicked publish button, I got an error: "Unable to load /epiui/edit/cms/Stores/contentdata/ status: 500. Value cannot be null. Parameter name: parentContent.

define([
  "dojo/_base/declare",
  "epi-cms/contentediting/editors/ContentAreaEditor"
  ],
  function( declare, _ContentAreaEditor) {
    return declare('shop.editors.ContentAreaWithCreateLink', [_ContentAreaEditor], {
      isCreateLinkVisible: function() {
        return true;
      }
   });
});

I found that something similar was a bug in version 7, https://world.episerver.com/support/Bug-list/bug/110583, but it seems to be fixed.

Anyone can help me?

Thanks in advances,

Kind regards.