Operating system: Kubuntu 19.10
Graphics card: GeForce GTX 660 NVIDIA 430.09
Broken: version: 2.80 (sub 60), branch: blender2.7, commit date: 2019-04-30 22:49, hash: `rB480a09a92f7f`
Thank you to resolve T63759, now here is the sequel.
In edit mode, Bevel Tool -> Vertex Only : when I enter a width value, it is wrong on the plane or the cube with the width/depth type (see images below).
It's OK with the offset type.
In addition, on the vertex's bevel of a cube, it's more difficult because I don't know where is the right width or the good depth, it's easier on a edge.