8.5 native compressor Sidechain issue

When I activate the SC input on the Steinberg Compressor plugin,
the connection does not show when i try to send some audio to it via a send.
I checked it with some other 3rd party compressors and no problem there.
It worked in cubase v8.0.32.

I know there was a fixed issue with C8 and the de-esser SC.
This one looks familiar I guess…

edit: no problem with other native plugins like the gate or de-esser