Comment # 8 on bug 1158673 from Dominique Leuenberger

(In reply to Frederic Crozat from comment #6)
> Nothing will change on the pango side (see upstream discussion). The proper
> way to move this would be to fix the offending fonts package to provide the
> font into OTB format.
> 
> One way to do it is explained at
> https://gitlab.gnome.org/GNOME/pango/issues/386#note_613754

IE, not a bug, but a feature.