System Information
Operating system: Win 7 64
Graphics card: GTX 1080ti

Blender Version
Broken: blender-2.80.0-git.69b2f5268114-windows64, blender-2.80.0-git.0b6dbbc306b0-windows64
Worked: blender-2.80.0-git.1d908bffddb4-windows64

Short description of error
The hair no longer renders.

Exact steps for others to reproduce the error
Click the cube, add hair and render.

Additional note
blender-2.80.0-git.0b6dbbc306b0-windows64 could somehow render some hair. I had a linked rig whose hair showed in the render (it was created in a previous version), but any new hair or any new linked or appended rig doesn't render hair.