(Quoting George Pîrlea from bug 1330111 comment #91) > Created attachment 8834970 [details] > facebook-not-secure-1.png > > Running the latest Nightly, the insecure login warning appears for me on > facebook.com > > I think it might be a regression introduced in this patch. Can anyone verify? I can't reproduce this on OS X "54.0a1 (2017-02-08) (64-bit)". Can you double-check which Nightly you're on and copy+paste the info from the About dialog like I did above. The "Built from…" on about:buildconfig would also be good.

Also if you are for sure on 2017-02-08 or higher and the "nightly" update channel then can you run mozregression to confirm what introduced the regression: http://mozilla.github.io/mozregression/

Sorry, I was on "53.01a (2017-01-16) (64-bit)". The Ubuntu PPA hasn't been updated in a while: https://launchpad.net/~ubuntu-mozilla-daily/+archive/ubuntu/ppa Oddly enough, now I can't reproduce this even on that version. I can't reproduce on "54.0a1 (2017-02-09) (64-bit)". This should probably be closed.

The bug was fixed on 2016-01-25 so that's why you saw it still: https://bugzilla.mozilla.org/show_bug.cgi?id=1329940#c45