RB750 - RB951 Cable Status Issue

i was checking my ether ports by shorting pin4 to pin2 (blue to orange) and pin1 to pin5 (stripes blue and stripes orange).. for it to detect as “link ok”
, i tested my rb750 and the result is “link ok”, while on my rb951 the link status dont change and it only shows cable pairs result..

how can i fix this? or is it chipset native results?

anyone knows why?