Adding stimulus breaks a test

[tpaulshippy]

Can someone help me understand why adding this block above the </head> tag of src/tests/fixtures/loading.html breaks a test?

    <script type="module">
      import { Application, Controller } from "https://unpkg.com/@hotwired/stimulus/dist/stimulus.js"
    </script>

Test that breaks:

yarn test:browser -g "reloading a frame reloads the content"

The same line exists in src/tests/fixtures/page_refresh.html so I'm not sure why it works there but not in loading.html

[tpaulshippy]

Oops - meant to put this in turbo, not turbo-rails