On English Wikisource, Template:Blackletter used to use WebFonts to display text in the UnifrakturMaguntia (added in bug ID 36666).
It did this with: style="font-family:'UnifrakturMaguntia';"
It looks like the recent change from WebFonts to Universal Language Selector has broken this function.
The template works if the individual user has downloaded the font to their computer but it was intended, like webfonts, for any user, casual or experiences, to see the effect online without having to download things or mess around with settings.
Can support for this font please be added to ULS too? Thanks.