Cruise, adaptive or not, still shuts off when you hit the brake. For cruise to be the issue, you'd need to have multiple faults from multiple systems and the ECU also fault to not notice disparities. That's probably somewhere between getting hit by a meteor and winning Power Ball twice in a row on the probability scale.
Throttle control, maybe, but you'd still need two faults at minimum. We know there are at least some level of checks between pedal position and throttle position because some of the aftermarket doodads that alter the pedal position sensor can throw codes. I don't know enough to say how robust those redundancies are, though, or if there are other checks in place.
Now, with Atlantis High and all the glitches, there's a non-zero chance it's some massive screw up in the software. Hell, maybe it's setting idle RPM to 5500 if a certain set of parameters is being hit due to some spaghetti code somewhere. Still more likely it's a physical cause, a boot edge or a floor mat explains the vast majority of these...but that doesn't mean it explains them all.
