Operating system: Ubuntu 18.04
Graphics card: GTX 1080
Broken: 2.80 26d5a362ed
Worked: <s>2.79b</s> Never.
Bake a high poly cube with subsurf and rounded edges, with flat walls onto a regular cube with bevels and face weighted normals and the new normals are ignored.
The bake should be similar to a bake with control loops near the the edges, with large flat surfaces having the neutral normal color (RGB 128,128,255) instead of a gradient over the surface - as if no face weighting is being done.
Blender file - contains a collection for the high poly, and two collections with different low poly setups.