1. Detailed steps to reproduce the bug (exactly how and when did it happen)
    I went to the course and clicked "Add and Activity or Resource" then selected "Interactive Content" and then the canvas will not display to design on.

  2. Platform and version number. E.g. Drupal, Wordpress, Moodle.
    Moodle 3.8.4

  3. Mobile or Desktop

  4. Browser: Chrome, Firefox, Safari etc
    Chrome, Explorer and Firefox

  5. H5P plugin version
    Current version

  6. H5P content type and version (if a content type was used), and a sample URL or attached H5P.
    All canvases do not work when updated.

  7. Any browser console errors
    Attached Image

  8. Any PHP errors

  9. Screenshots if it's a visual problem
    Attached Images

  10. Any recent changes to the environment (new plugins/modules, updates, configuration changes etc.)
    Upgraded to a VPS Server, but we've cloned the Moodle Instance and put it on a normal server and still had the same issues.

  11. Any recent changes to the browser you're using (new extensions, updates etc.)
Content types: 

After consulting with a friend who works for Google, it would appear you should check your browser is up to date. If Chrome fails to update within a certain timeframe it will block JS Operational Function resulting in the above.

All platforms are now working perfectly fine for me.