I've been using this on mobile for a couple of years now, I've noticed it failing in the way you mention quite often in the last 3 months or so. I'm not sure how maintained the rules are, they might need updating. Previously it was working nicely, although probably only on 40% or so of pages. I've also used ublock to block cookie consent popups, which catches more but occasionally has to be disabled as sometimes it will break scrolling or interaction with the page.