Just upgraded from 12 to 13 U2.
No longer loads in Waterfox/Firefox. See:
Chrome loads the UI fine. Can this be fixed please?
The resource from “https://192.168.1.91/ui/runtime.11b7a325137ea8c8ab83.js” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).
developer.mozilla.org
In Firefox/Waterfox now in 13 U2 visiting the base URL e.g. https://192.168.1.91 redirects...
Read more
No longer loads in Waterfox/Firefox. See:
Chrome loads the UI fine. Can this be fixed please?
The resource from “https://192.168.1.91/ui/runtime.11b7a325137ea8c8ab83.js” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).

X-Content-Type-Options - HTTP | MDN
The X-Content-Type-Options response HTTP header is a marker used by the server to indicate that the MIME types advertised in the Content-Type headers should be followed and not be changed. The header allows you to avoid MIME type sniffing by saying that the MIME types are deliberately...
In Firefox/Waterfox now in 13 U2 visiting the base URL e.g. https://192.168.1.91 redirects...
Read more