Can't Automate ADSR in Groove Agent SE5

I have seen tutorials of people automating the ADSR in the Groove Agent SE5 amp section- simply right click on a square of the envelope and add automation. This does not work for me, and in a club Cubase tutorial Greg Ondo couldn’t get it to work either. Does anyone have any advice please?

Looks like a regression, it worked in version 5.0.50.

I’ll let the devs know, thanks for bringing it up.