When I use waypoints in pythonAPI, the physical collision attribute of NPC is lost

Here is my code !!!!!

#!/usr/bin/env python3
#

from environs import Env
import lgsvl
import os

env = Env()

def on_waypoint(agent, index):
    print("waypoint {} reached".format(index))

sim = lgsvl.Simulator(env.str("LGSVL__SIMULATOR_HOST", "127.0.0.1"), env.int("LGSVL__SIMULATOR_PORT", 8181))
if sim.current_scene == "BorregasAve":
    sim.reset()
else:
    sim.load("BorregasAve")

spawns = sim.get_spawn()

state = lgsvl.AgentState()
state.transform = spawns[0]

for spawn in sim.get_spawn():
    print(spawn)

#state.transform.position = lgsvl.Vector(3.07,0,-87.25)
forward = lgsvl.utils.transform_to_forward(spawns[0])
right = lgsvl.utils.transform_to_right(spawns[0])

state.velocity.x = -5
state.transform.position = lgsvl.Vector(20,0,5.5)
state.transform.rotation.y = 270

ego = sim.add_agent(env.str("LGSVL__VEHICLE_0", "Lincoln2017MKZ (Apollo 5.0)"), lgsvl.AgentType.EGO, state)

state.transform.position = lgsvl.Vector(10,0,5.5)
state.transform.rotation.y = 270

state.velocity.x = -7

npc1= sim.add_agent("BoxTruck",lgsvl.AgentType.NPC,state)

waypoints=[
    lgsvl.DriveWaypoint(lgsvl.Vector(-5,-2,5.5), 4, lgsvl.Vector(0, 270, 0)),
    lgsvl.DriveWaypoint(lgsvl.Vector(-3,-2,5.5), 3, lgsvl.Vector(0, 270, 0)),
    lgsvl.DriveWaypoint(lgsvl.Vector(-2,-2,5.5), 2, lgsvl.Vector(0, 270, 0)),
    lgsvl.DriveWaypoint(lgsvl.Vector(-1,-2,5.5), 1, lgsvl.Vector(0, 270, 0)),

]

npc1.on_waypoint_reached(on_waypoint)
npc1.follow(waypoints)

# ego.connect_bridge(os.environ.get("BRIDGE_HOST", "192.168.137.3"), 9090)

sim.run()

# sim.run(time_limit=1.0)

lgsvl / PythonAPI

When I use waypoints in pythonAPI, the physical collision attribute of NPC is lost #34