It's never done this before but just recently it's begun logging me out anytime I close the tab AG is open in or if I click another link and then open assembler in another tab the cookies are set to expire/be cleared when I close firefox so IDK what this is unless its a recent change to assembler.
Yeah, I deleted my user profile and signed into assembler, set up my options (history etc) then tried it and it worked, paste in my old profile and broken again. I guess i'll restart from the beginning.