diff --git a/addons/block_code/block_code_plugin.gd b/addons/block_code/block_code_plugin.gd
index b64fd2c8..28c2e958 100644
--- a/addons/block_code/block_code_plugin.gd
+++ b/addons/block_code/block_code_plugin.gd
@@ -13,6 +13,10 @@ var old_feature_profile: String = ""
 
 
 func _enter_tree():
+	# Hack for `EditorInterface.open_scene_from_path()`, see: https://github.com/godotengine/godot/issues/86869
+	for _frame in range(10):
+		await get_tree().process_frame
+
 	main_panel = MainPanel.instantiate()
 	main_panel.undo_redo = get_undo_redo()
 
diff --git a/addons/block_code/ui/main_panel.gd b/addons/block_code/ui/main_panel.gd
index 3d3a3a60..3b992cc0 100644
--- a/addons/block_code/ui/main_panel.gd
+++ b/addons/block_code/ui/main_panel.gd
@@ -2,13 +2,19 @@
 class_name MainPanel
 extends Control
 
+const EditorInterfaceAccess = preload("res://addons/block_code/lib/editor_interface_access.gd")
+const Picker = preload("res://addons/block_code/ui/picker/picker.gd")
+const BlockCanvas = preload("res://addons/block_code/ui/block_canvas/block_canvas.gd")
+const DragManager = preload("res://addons/block_code/drag_manager/drag_manager.gd")
+const TitleBar = preload("res://addons/block_code/ui/title_bar/title_bar.gd")
+const BlockScriptData = preload("res://addons/block_code/block_script_data/block_script_data.gd")
+const BlockCode = preload("res://addons/block_code/block_code_node/block_code.gd")
+
 var eia: EditorInterfaceAccess
 
 @onready var _picker: Picker = %Picker
 @onready var _block_canvas: BlockCanvas = %NodeBlockCanvas
 @onready var _drag_manager: DragManager = %DragManager
-#@onready var _node_canvas := %NodeCanvas
-#@onready var _node_list: NodeList = %NodeList
 @onready var _title_bar: TitleBar = %TitleBar
 
 var block_code_tab: Button
diff --git a/addons/block_code/ui/picker/categories/block_category_display.gd b/addons/block_code/ui/picker/categories/block_category_display.gd
index 42678ccc..343ad5a4 100644
--- a/addons/block_code/ui/picker/categories/block_category_display.gd
+++ b/addons/block_code/ui/picker/categories/block_category_display.gd
@@ -2,8 +2,10 @@
 class_name BlockCategoryDisplay
 extends MarginContainer
 
-var category: BlockCategory
+const BlockCategory = preload("res://addons/block_code/ui/picker/categories/block_category.gd")
+const Block = preload("res://addons/block_code/ui/blocks/block/block.gd")
 
+var category: BlockCategory
 @onready var _label := %Label
 @onready var _blocks := %Blocks
 @onready var _background := %Background