A family definition in fonts_customization.xml alone is inert -- it needs a switcher RRO (config_bodyFontFamily override) to actually be selectable as the active system font, same as every other font here.
A family definition in fonts_customization.xml alone is inert -- it needs a switcher RRO (config_bodyFontFamily override) to actually be selectable as the active system font, same as every other font here.