In Ruwiki we use TemplateStyles in many sport-related infocards to align icons in the heading. Seems like mobile application uses some kind of strip_tags to show heading contents from infocard in collapsible block, but doesn't sanitize and cutoff tag <style> properly.
Examples:
https://ru.m.wikipedia.org/wiki/Вудс,_Тайгер
https://ru.m.wikipedia.org/wiki/Зидан,_Зинедин