Random SIGSEGV in go_to_location() for AI Walkers

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Setup Describe the setup you are using to run CARLA along with its version:

• CARLA version: 0.9.12
• Platform: Ubuntu22.04
• Python version: 3.7
• GPU: Nvidia 4090
• GPU Drivers: 560.35.03

Describe the bug When spawning AI walkers and sending them to random navigation points via go_to_location(), the program intermittently crashes with an unhandled SIGSEGV (segmentation fault). The crash occurs after successful walker/controller spawning but during pathfinding execution, suggesting an internal CARLA navigation mesh issue.

Steps to reproduce run the python code

import carla
import random
client = carla.Client('localhost', 2000)
world = client.get_world()
map = world.get_map()
spawn_point = random.choice(map.get_spawn_points())
print(map.name, spawn_point)

walker_bp = world.get_blueprint_library().find('walker.pedestrian.0001')
ai_bp = world.get_blueprint_library().find('controller.ai.walker')

walker = world.try_spawn_actor(walker_bp, spawn_point)
world.tick()
walker_controller = world.try_spawn_actor(ai_bp, spawn_point, walker)
if walker:
    world.tick()
    walker_controller.start()
    try:
        transform = world.get_random_location_from_navigation()
    except Exception as e:
        print('no random location')
        transform = carla.Transform()
    print(transform)
    walker_controller.go_to_location(transform)
    print('success set destination')

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