Fixed Terrain3D segfault on close

levels/debug_level/debug_level.tscn

@@ -51,17 +51,16 @@ _shader_parameters = {
 "noise_texture": SubResource("NoiseTexture2D_sb318"),
 "vertex_normals_distance": 128.0,
 "world_noise_height": 74.0,
-"world_noise_lod_distance": 16384.0,
+"world_noise_lod_distance": 7500.0,
 "world_noise_max_octaves": 8,
 "world_noise_min_octaves": 2,
 "world_noise_offset": Vector3(0, -8, 0),
-"world_noise_region_blend": 0.33,
+"world_noise_region_blend": 0.55,
 "world_noise_scale": 5.0
 }
 world_background = 2
 texture_filtering = 1
 auto_shader = true
-show_region_grid = true
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_l1sla"]
 transparency = 4
@@ -257,7 +256,8 @@ point_count = 5
 data_directory = "res://levels/debug_level/terrain_3d_data"
 material = SubResource("Terrain3DMaterial_woy2k")
 assets = SubResource("Terrain3DAssets_eq5uw")
-show_grid = true
+mesh_size = 64
+top_level = true
 metadata/_edit_lock_ = true
 
 [node name="WorldEnvironment" type="WorldEnvironment" parent="."]

src/world/world.gd

@@ -4,7 +4,7 @@ class_name World extends Node
 ## A world contains player(s) and the active level, manages player states,
 ## and transitions between active levels.
 
-@export var initial_level: PackedScene = preload("res://levels/debug_level/debug_level.tscn")
+@export var initial_level: PackedScene = load("res://levels/debug_level/debug_level.tscn")
 
 @onready var level: Node3D = %Level
 @onready var ui: WorldUI = %UI