RouterOS v7.8 Stable: Cable Test not working properly

RouterOS RouterOS beta
1

hardware: RB5009UG+S+
version: v7.8 Stable
issue: the cable test does not show cable pairs output, and stuck there.

terminal output:
[admin@rb5009] > interface/ethernet/cable-test ether2
name: ether2
status: link-ok
(being stuck and no more output)

2

There is no cable test in RB5009
https://wiki.mikrotik.com/wiki/Manual:Interface/Ethernet

3

(List of supported devices now seen at https://help.mikrotik.com/docs/spaces/ROS/pages/8323191/Ethernet#Ethernet-DetectCableProblems )