|mediawiki/extensions/WikimediaBadges : master||Add autoload classes|
|wikidata/build-resources : master||Explicitly load WikimediaBadges with wfLoadExtension|
Okay, Everything looks normal except that CSS of WikimediaBadges extension stopped being injected for a reason that's still unknown to me.
The fast fix is to add https://en.wikipedia.org/w/index.php?title=User:Ladsgroup/monobook.css&oldid=794035784 to Mediawiki:Monobook.css and https://en.wikipedia.org/w/index.php?title=User:Ladsgroup/vector.css&oldid=794035724 to Mediawiki:Vector.css
In the mean time, I will find out what's going on there.
I hoped this task would have been resolved in one or two days max, because those badges are very important for both Wikipedians and readers when navigating articles... More than 10 days passed with no fixing attempt or direct response, even though problem as I see it should be easily resolvable.