It’s about this. It’s fascinating how Mozilla Firefox keeps making updates that are not actually enhancements, but changes. Those updates have for years caused browser addons to malfunction. So it means useful plugins, to me especially Finnish spellchecker, Firebug, DOM Inspector, and countless others have been broken. Addon developers, I’m sure, try to fix their products, but as they get rekt version after version it must be quite tiresome.
Firefox sabotages itself, or "Local Man Ruins Everything"