On itwiki we noticed that, on certain pages, mobile style isn't loaded. For instance, this happens [[https://it.wikipedia.org/wiki/Rosso_relativo?useformat=mobile | here ]], where the class `sinottico` isn't loaded and thus breaks the infobox. I did a little bit of investigation on my local machine and found out that the culprit might be https://gerrit.wikimedia.org/r/#/c/420405/. Specifically, [[https://gerrit.wikimedia.org/g/mediawiki/extensions/MobileFrontend/+/master/includes/MobileFrontend.hooks.php#807 | this if]] evaluates to false and style isn't loaded; actually, when should it evaluate to true? It asks for a global variable which defaults to false and which, as far as I could see, is never changed. Anyway, I'm not sure that the one I exposed is the real cause, but certainly inverting that `if` makes the style come back.