This is so stupid, I was just on Facebook then it told me to refresh, now theres some security crap.
Facebook does NOT require any HSTS, Edge goes there with no problem. This is why I deleted Firefox last night, I downloaded it again to try to get there and what do you know, it worked. That is until it told me to refresh, then all of a sudden you claim it requires this HSTS which is crap. The only reason I'm not on Edge now is one small little imperfection that Firefox doesn't have. So I guess I'll be deleting Firefox yet again with it's HSTS nonsense.
Opaite Mbohovái (1)
I am having no such issue on FB and I haven't seen any reports similar to yours.
https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode https://support.mozilla.org/en-US/kb/troubleshoot-extensions-themes-to-fix-problems (also deals with hardware acceleration)