Interesting. I know Firefox has an update because I used my system package manager to update it.

Maybe it's something I did, but lately, Firefox won't write "print to pdf" files to external drives. (mac)

There was an update last night, Oops, same deal. No message, no file.

Writes to the Documents directory.

I do have lots of extensions and window manager tweaks going on, though I cleared history yesterday.

What version are you on now?

Edit: I ask because releases are scheduled in advance, you can see the calendar here: https://whattrainisitnow.com/calendar/