Reactive agents spawn at incorrect initial positions

[tLLWtG]

Describe the bug

In certain scenarios, reactive agents spawn at incorrect initial positions. During testing on the Test14-hard split, I observed this issue in multiple low-score scenarios—reactive agents initialized at wrong positions compared to their expected placements in non-reactive closed-loop simulations.

This often causes the ego vehicle to immediately collide with vehicles that should be in other lanes, resulting in a score of 0.

After checking a small sample of low-score scenarios, I identified two concrete examples:

• 4fde9018255c5f96
• 6f2ce5e5530b5e3c

Setup

normal tutorial setup

Steps To Reproduce

Run closed_loop_reactive_agents simulation with scenario 4fde9018255c5f96.

GIFs

• closed_loop_reactive_agents simulation (4fde9018255c5f96)​

• closed_loop_nonreactive_agents simulation (4fde9018255c5f96)