It is strange, because this i can find 'only' in the module which is for themeconfigurator, but i do not have anything configurated/change by this. At the moment i am playing around and add this to the @font-face (i have seen this in the loaded code, so maybe it must be given also in the local fonts):
unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
also another hint found here: css - Google Fonts provides different WOFF2 files between Chrome and Chromium - Stack Overflow