Hello! I ran into an issue when exporting an FBX CC5 through the CC/IC pipeline into Blender 4.5. The hair was showing black square artifacts in both Eevee and Cycles, so I thought I’d share the fix in case anyone else encounters it.
Just select the hair, open the Shader Editor, and change the connection from Base Color → Base Color to Diffuse → Base Color. See the image below.
