Bioschemas testing tool does not show ELIXIR node

[fbacall]

Describe the bug

When testing some Bioschemas JSON-LD with TeSS' testing tool, it does not display the linked ELIXIR Node, even though it will when run for real.

To Reproduce

Go to the Bioschemas testing tool (linked from footer)

Input the following JSON snippet:

   {
      "@context": "http://schema.org",
      "@type": "LearningResource",
      "http://purl.org/dc/terms/conformsTo": {
        "@id": "https://bioschemas.org/profiles/TrainingMaterial/1.0-RELEASE",
        "@type": "CreativeWork"
      },
      "name" : "Example UK e-Learning Material",
      "description" : "Example",
      "url" : "https://example.com/material",
      "learningResourceType": "e-learning",
      "provider": [
        {
          "@type": "Organization",
          "name": "ELIXIR United Kingdom"
        }
      ]
    }

Click "Test" and then "Preview" the one result.

Expected behavior

Should display associated ELIXIR node in the sidebar, like this:

Screenshots

Actually shows this: