Is nonblocking background loading on Web posible?

Godot Version

v4.6.2.stable.official [71f334935]

Question

I have IntroScene and LevelScene. In IntroScene i have code:

func _ready() -> void:
    ResourceLoader.load_threaded_request(LevelScenePath);

func _process() -> void:
   var status = ResourceLoader.load_threaded_get_status(LevelScenePath)
   if  status == ResourceLoader.ThreadLoadStatus.THREAD_LOAD_LOADED:
       showButtonNext()

In debug mode and in Windows export it works as expected:
IntroScene starts and after some time `showButtonNext` is called

But in Web export ‘ResourceLoader.load_threaded_request’ is blocking and Intro starts only after LevelScene in loaded.

Is it posible to load staff in background on web, or is that limitation on web export now?

You must enable thread support in the web export, it’s supported by Godot, but not supported by many online game sites. Enabling such a feature will require special permissions from the site host.