FF for mobile also broke extensions *again* the other day. Their big "quantum" update 1-2 years ago broke them all. Not sure why they decided to do it again so soon. It's so bad when I went to their extension section they only had a handful of extensions to install! All other ones were not supported in the new version. Including one of my faves ABP.
Not sure why they can't keep their extension API more stable... At least the desktop version hasn't broken them since quantum.