Thanks for letting me know, and for the more detailed info - the redirect worked for the basic permutations I tested for (www.domain.com, and http://domain.com

Thanks for letting me know, and for the more detailed info - the redirect worked for the basic permutations I tested for (www.domain.com, and http://domain.com http://domain.com etc.) but I am redirecting non-www and www traffic to https://www https://www. in Nginx. (Solution found, see edit below.) I'd not heard of the CMD+ENTER method before, so thanks for the heads up. Still not entirely sure what Firefox is submitting in that case. Will test. I wasn't referring to this site in the parent comment, but to my freelance site. I'll put that site in my profile for 24 hours just in case anyone wants to take a look. EDIT: Fixed, as noted in reply to nl's comments. A recent change led to a redirect line being mistakenly commented out.