please try this:
-Import a stereo file
-In “import options” select Split channels
-Than select “Different tracks”
-Insert a Cubase compressor (or gate) in one of the the 2nd track (right channel) insert slots
-The plug-in is not working (move the compressor to the 1st track and it works)
In my case this happens with a lot of plug-in (also by other vendors).
I’m working in a 48 KHz 24 bit song.