https://bugzilla.redhat.com/show_bug.cgi?id=2262410
--- Comment #11 from Łukasz Patron priv.luk@gmail.com --- (In reply to Akira TAGOH from comment #10)
Well, I'd say this is mpv issue actually. I see they intentionally ignore lang object in a fontconfig cache and process fonts in their own way. Picking up Noto Sans Arabic on en_US locale doesn't make sense. Plus, even if mixing up with Noto Sans and Noto Sans Arabic all together for alphabets and numeric characters, pango-view such as `pango-view --markup --text '<span fallback="false"><span font="Noto Sans 20">ABC</span><span font="Noto Sans Arabic 20">01234</span></span>'` and similar html on web browsers doesn't render like it.
Therefore it should be mpv issue. Reassigning.
Are they really ignoring the lang object? As far as I can say, you removed it in this change https://src.fedoraproject.org/rpms/google-noto-fonts/c/609f6bc1323476289beda... and after restoring it, mpv works just fine.