Changing a neutral unit to an Empire unit does not change the skin
Operating System
Windows 10 Home 64-bit
CPU
Intel Core i7 6700HQ @ 2.60GHz 47 °C
Skylake 14nm Technology
RAM
32.0GB Dual-Channel Unknown @ 1197MHz (17-17-17-39)
Motherboard
Alienware 0FG0DK (U3E1)
Graphics
Generic PnP Monitor (1920x1080@60Hz)
Intel HD Graphics 530 (Dell)
NVIDIA GeForce GTX 1070 (Dell) 49 °C
ForceWare version: 378.66
SLI Disabled
Storage
931GB Hitachi HGST HTS721010A9E630 (SATA) 33 °C
Optical Drives
No optical disk drives detected
Audio
Realtek Audio
This is a very easy bug to replicate. Simply open the map editor and place a neutral Empire unit (the unit is neutral but selected from the usual Empire faction, such as a vanguard). Right-click on the unit and change it to an Empire unit. The unit now belongs to the Empire faction but possesses the same skin as the neutral/underlord version.
Before:
After:
I was informed that no output log is necessary because it is easy to replicate.
Can confirm