Why can't the devs have it update in the background or on next startup? I was in the middle of my work when I got this. Now I need to close everything and go through all the logins and 2FA again. 😡
Chrome is much better at this, hands down. It has never interrupted me the way Firefox does during updates.
I've never ever seen this screen before, there must be a setting for it.
I see it under linux after updating Firefox through the package manager. Maybe OP's distro auto updates packages?
it usually happens on linux (and maybe macos??)
if you update firefox using your system package manager it will ask for a restart