Instantiating a scene containing a TileMapDual doesn't update the tiles initially

[ivoltz]

Hello, first of all thanks for the plugin, I've been using it for my project and it's been really useful!
Now I've recently updated it to v5 and got an issue when instantiating a scene containing a TileMapDual, here's the description:

Tested Version
Godot 4.3

Issue description
When instantiating a PackedScene containing a TileMapDual node with pre-existing tile data, the instance doesn't automatically update the tiles which are set to their initial state. This might be a visual-only bug, and doesn't happen when the scene is directly run from the editor with Run Current Scene. Any update to the tileset afterwards seems to fix the issue.

From the example scenes, MultipleAtlases.tscn when run directly from the editor

MultipleAtlases.tscn when instantiated from a PackedScene

Steps to reproduce

1. Open the default TileMapDual-main project
2. Add some code to instantiate another scene containing pre-existing tile data at runtime from any scene
3. Run the project
4. Instantiate the other scene, you will see that the pre-existing tile data isn't properly displayed

I've reproduced the issue by adding some quick code in CursorDual.gd to instantiate MultipleAtlases.tscn (which is the clearest example) from a PackedScene and got 100% repro. Unfortunately I'm not able to upload my MRP for some reason but here's the code I added:

var multiple_atlases = preload("res://examples/MultipleAtlases.tscn")

# Inside _process
if (Input.is_action_pressed("ui_focus_next")):
	var instance = multiple_atlases.instantiate()
	get_parent().queue_free()
	get_tree().root.add_child(instance)

Pressing Tab would instantiate MultipleAtlases.tscn without any tile displayed. Further updates to the tileset by adding a tile (while still running) with the cursor correctly updates the entire tileset

Hope you can help me with this issue, thanks!

[pablogila]

Hey there!
Thanks for sharing. This seems related to #10. I thought it should be fixed by updating the tilemapdual at _ready(), but for whatever reason this does not work. I'm not sure what could be the problem, any suggestion is really welcome.
Cheers!

[ivoltz]

Thanks for the reply, I'll try to delve deeper in the plugin code when I find the time. Maybe a delayed update could do the trick temporarily but it's definitely not viable long-term.