The cab block has been that way for years.Honestly I don't know, and I don't wanna get killed by those that do.
But I was spending the day working in a new DAW rig and noticed my stereo-delays weren't happening. After a good bit of hating on my DAW and interface ... I realized that it was the AXE.
I have my delays before my cab block, because I also pump it through stereo real cabs.