Legacy Arabic Fonts
Recently (at around 2021) HarfBuzz started supporting legacy Arabic fonts, those are fonts from the era of Windows 3.1 and they are the majority of Arabic fonts (Arabic script, which would include many languages such as Farsi and Urdu).
See this issue over on Harfbuzz repo.
Currently, when viewing one of those fonts they appear as gibberish (see the picture)/
On recent Harfbuzz builds now this font gets rendered properly:
I am not entirely sure what needs to be done here, but I suspect it is something up with pango and/or with the version of the harfbuzz build being used (mostly probably).
OS: Fedora 38. App Version: 44.0.
Edited by Bilal Bassam