You're right, this went fairly far off the the true topic.
I would also expect the line to be much finer than this but I have noticed a similarly-blurred edge at the edge of the playable map. Sometimes I run from the non-dark matter part of the map (the playable area) into a dark matter damage part (non-playable) and then start backing up to find where the DMD stops, then walk forward again to find where it starts. On some of those occasions I've noticed that I can walk forward past the point where the DMD stopped while going backwards before it starts again. There was a way to get through the artificial zone boundaries in AWA that would act in the same way too so I'm wondering if it's an issue with the Torque and Torque3D engines.