Custom Fonts not visibile in packaged builds.

[HellDunkel]

Swapping fonts at runtime as well as uploading custom fonts in the rive editor results in invisible text in packaged build. In both cases the custom font worked inside the Unreal Editor but not in the builds.

RivePluginversion: 0.3.3
Unreal Version: 5.4.4
Windows 11
Tried DX11 AND 12 -> same behaviour

[Tod-Rive]

This seems to be an issue with CFF fonts and our use of Harbuzz. We'll be fixing this in the future. The current workaround is to convert fonts to TTF using a tool like FontForge.