Nx-Drawio does not play well with Firefox

[jtagcat]

Firefox users get this image by default settings caused by content blocking.

If you know more than a normal user, you know to open the site's settings in the URL-bar and disable blocking for this site.
Nx-Drawio should check, if the browser is Mozilla and instruct on first use or when the error msg is displayed (if you have the ability to know), instruct users to disable blocking.