System Information
Operating system: Windows 10pro
Graphics card: Nvidia TitanX

Blender Version
Broken: 2.80 RC
Worked: (optional)

Short description of error
there is no colour different of the outline between the active bone and the selected bones

Exact steps for others to reproduce the error
I've uploaded a short video.

Just create an armature with 2 bones.
TEst out in pose mode : works
In edit mode : doesn't work{F7624794}