Removing code that changes solid type won't helped, same result at removing code that changing collusiongroup; and spawning like prop_physics_override.
Clear prop_physics I can't spawn, because I don't know, how. I try to create, then dipatch spawn, teleport entity and setting model, but I see none. It case prop_physics_override this works.
But in all checked cases spawned props are empty and unsolid.