https://bugs.winehq.org/show_bug.cgi?id=53019
--- Comment #5 from Victini v_winebugs@outlook.com --- Still occurs on 8.18 Staging, Arch Linux.
Adding SimSun and MS Gothic to /usr/share/fonts/truetype changes nothing. Bold fonts are still showing up as boxes on MusicBee. To make matters worse, changing fonts on MusicBee in this prefix is impossible now; it complains about the font not being a TrueType font (even though it's... only displaying TrueType fonts.)