dragontorc wrote:
PingFangUI fonts are OpenScript.
If you review the list of Fonts included with macOS Sequoia, you'll see that there actually is no "PingFangUI" font available. There are other "PingFang" fonts, but no "UI" version.
As I clearly demonstrated before, all available PingFang fonts work fine.
The PingFang TTC I had extracted from the mobile.font7 subfolder in the AssetsV2 directory is also broken because it contains duplicates. It differs from the original for the addition of the MO subset which was previously unavailable on previous versions of macOS.
However, before, I didn't notice that you were specifically referring to "PingFangUI". If you found that in some "mobile" "assets" directory, then it is most likely meant for support of mobile apps running on macOS or maybe even iPhone Mirroring.
Either way, this is not a font you can install and use. You can use the other PingFang fonts which are listed in Font Book. They don't name the directory "PrivateFrameworks" for no reason.