Most notably, Adblock Plus is disabled.
https://adblockplus.org/forum/viewtopic.php?f=1&t=65910
Appears to be because ABP didn't meet firefox's near safety criteria. Some other ones including the extension that lets me view this forum like it used to be, are also disabled. The greasemonkey script and a couple other irrelevant ones.
Kind of irritating.
inb4chromegangedit: didn't see other thread