Code autocomplete doesn't work with new methods

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:bust_in_silhouette: Asked By disablak

child class

class_name UnitsManager
extends Node2D
...
func new_test_method(): # added new method
  return

parent class

class_name MyWorld
extends Node2D
...
@onready var units_manager: UnitsManager = $UnitsManager as UnitsManager
...
units_manager.new_test_method() # here autocomplete doesn't work

It only starts working after restarting Godot. If I try to call it in the same class, autocomplete works. This issue doesn’t occur with a new project. Could the reason be due to my large scripts? (400~ lines)