Cubase 9 Automation Problem?

Hi I have never seen this before, just today it seems to have happened. Can anyone tell me if this is a bug or is it a setting I have accidently enabled/disabled? Thanks in advance.

Cubase 9.0.1, MacOS Sierra 10.12.3
Screen Shot 2017-03-18 at 17.05.47.png

Hi and welcome,

You have a VCA Fader linked to this Channel, right? Then it’s correct? The lower line is the one, which is combined with the VCA. So this is the result one.