[Regression] Segfault on map load

[dragonhunt02]

Issue description

Before loaded map starts, game crashes.

Issue is present in latest release https://github.com/V-Sekai/v-sekai-game/releases/tag/0.1.0-nightly-2025-03-07T041351-4b792d5_editor-7882a94
Related commit V-Sekai/world-godot@7882a94

Last working version is https://github.com/V-Sekai/v-sekai-game/releases/tag/0.1.0-nightly-2025-03-03T214126-4b792d5_editor-5eb3632

Log

...
background_loader_task_done: user://asset_cache/227eb40aa93193290c8e2adef28b575a.scn, error: OK resource_path: user://asset_cache/227eb40aa93193290c8e2adef28b575a.scn
Sanitising map...
_map_loaded
create_server_state...
_host_create_server_state
_threaded_host_state_initialization_func
Instance map...
Instancing map...
Assigning instanced map...
Instanced map assigned!
Map instanced!
Adding player scene for 1...
Creating entity instantiate NetEntity_Player_1 of type res://addons/vsk_entities/vsk_player_old.tscn
   At: Cannot retrieve debug info outside the main thread. Thread ID: 22
Attempting to register network instance_id 0
ERROR: Multiplayer can only be manipulated from the main thread.
   at: get_multiplayer (scene/main/scene_tree.cpp:1623)
_threaded_host_state_initialization_complete
Spawning entities = [
{ NetEntity_Player_1 }
]
GOT a finished signal!
_host_setup_map
Setting current map...
Current map set!
Scene Tree: Add Entity Command...NetEntity_Player_1
Adding entity: NetEntity_Player_1
My path /root/VSKGameFlowManager/GameViewport/Gameroot/NetEntity_Player_1/PlayerInteractionController camera_con ../TargetSmooth/PlayerCameraController
Got a cam controller PlayerCameraController:<Node3D#1676027103427>
Adding: NetEntity_Player_1:<Node3D#1675154689070>
Segmentation fault (core dumped)

Steps to reproduce

1. Open V-Sekai https://github.com/V-Sekai/v-sekai-game/releases/tag/0.1.0-nightly-2025-03-07T041351-4b792d5_editor-7882a94
2. Host Server

Minimal reproduction project (For SDK or engine issues)

No response

Using a released version?

yes

What OS? Any other relevant information? (V-Sekai version, Godot revision, System information)

Ubuntu 24.04