Hi, Danny!
Thank you for your interest.
Here is a quick screen recording with an oscilloscope to demonstrate that track meters are all active including Stereo Out but sound is all muted. I was unable to catch the very moment it went inaudible as the moment is hardly predictable, but recorded the aftermath. You can see that deactivating the Step FX instance doesn´t help although on few occasions it has. Also not a single automation is even drawn/recorded to the track with Step FX. It happens on all projects I include Step FX and the problem is still present even when I import all data to a new project file.