I have a problem with the T-seriers coupuling system

Its since the update that when i try to connect the T-Seriers Truk to an Trailer

that the standin pillars didnt rise and i noticed too that the the blue marking on the trailer dont show up
and the blue marking on the truk has a darker blue not like bevore

did the 0.16.3 update some chancings on the couple system ?

and if a mod is responsible for this i tryed out to dissable any mod that is related to the t seriers including some parts paks an multi vehicle Pack didnt foud out which one it could be

if anyone have the same problem or did it solve i would be greatful for any tips to solve the problem