Due to the changes made to subsurface profile (implementation of full resolution skin shading) it now renders white or with heavily faded base colors under certain conditions.
In this case it is when illuminated by particle lights. There are other JIRA tickets out for the other cases.
To fix this you simply need to change r.sss.checkerboard to 1 this reverts back to the old behavior so you lose full resolution skin shading.
Issue Does not occur in Binary 4.13.2 CL 3172292
Issue Does occur in Binary 4.14.3 CL 3249277
As the the sphere is lit by the particle system it will turn white.
The sphere appears blue in areas illuminated by particle system
Head over to the existing Questions & Answers thread and let us know what's up.