I set up a "favelet" under FF today and had no problem or reports of deprecated functions - what are you trying to do?
itchypaws
Paul Clarke's weblog - I live in A small town. Wed and dad to 2, I'm a full stack web engineer, + I do mostly javascript / Node, some ruby, other languages ect ect. I like pubs, parkrun, eating, home-automation and other diy stuff, history, genealogy, TV, squirrels, pirates, lego, and time travel.