[sumo-user] Different output from traci and libsumo

[Shi Helen <helenshi1991@xxxxxxxxx>]

Hi, I'm doing a project with SUMO and Libsumo. I noticed that teleporting occured at step N and I wanted to see what exactly happened at that step. So I switched to Traci with Sumo-gui and used the same demand input. However, at step N, I didn't see any teleporting (or any traffic jam). I'm wondering if there is any explanation for this?   

PS, the traci commands I applied were adding demand, retrieving  speed/location/vehicle_id list/vehicle route_id,  and setting speed.