Yeah, another giveaway is when you start in-air, or at the spawner, but char drops through floor.
Possibly related side-note - You can’t trust OnBegin() to actually be ready - always put Sleep(0.0) as your first line in a verse device.
I suspect this has all gotten worse with v36.00 too - 50% of times my creative_device’s GetSimulationEntity[] succeeds, but returns nothing usable. I will probably start it with a 1-second loop until there is a usable base_entity in my new maps.