Operating system: Windows 10 Pro
Graphics card: MSI GTX 1080Ti
Broken: blender-2.80-779860d34e26 and since the bevel shader implementation
Short description of error
Bevel shader when baked to the normal map has slight discolorations that follow mesh wireframe. Color shifts from 8080ff to 807fff in those areas and crates unwanted artifacts.
Exact steps for others to reproduce the error
Bake a normal map of your low poly mesh with bevel added in your material. It's most visible on flat areas with some triangles.