I am working with 2.79.5 and a Bevel node from this version.
I use the bevel node to bake fake bevels on a normal map, bu the baking didn't turn out as expected, I ended up with a messed up normal map that doesn't even have bevels on the edges
Here is a normal map made with another Object and the same method that turned out well :
and Here is my node setup (images textures being other shading maps) :
I still don't know why my normal map turned out so bad. I also tried baking with high poly object and "Selected to Active" checked in the baking panel, but the result was the exact same. This kind of error happened only with a particular object that's on my model. Also made a quick try with 2.8, same result.