I think that a report has already been submitted but I'm not quite sure that it is a bug. I have test three different sets of cycle nodes, the PhysicalSurface, the PrincipledBsdf, and Ghostship's Uber 3, and fine-tuned the SSS settings for each. For every instance, I found that each node required very low SSS values, anything that is considered too high causes glowing. And some of those values are based on posted Blender tutorials that support what I am seeing.