### Godot version

4.2 6da4ad1

### System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

### Issue description

![image](https://github.com/godotengine/godot/assets/2223172/d65ab202-93dd-4d83-bcef-c2b34bfa23f3)

In 4.2 dev3:
![image](https://github.com/godotengine/godot/assets/2223172/8621ec24-65d4-490d-bfc1-7e6e8aa3606a)


### Steps to reproduce

1. Create a scene with some children
2. Instantiate it in another scene
3. Enable editable children

### Minimal reproduction project

N/A
}
		} else {
			error->set_text(text);
			error->set_meta("invalid_character", true);
			error->set_meta("same_unique_name", false);
			error->popup_centered();
		}
	}
	// Trim leading/trailing whitespace to prevent node names from containing accidental whitespace, which would make it more difficult to get the node via `get_node()`.
	new_name = new_name.strip_edges();
	if (new_name.is_empty()) {
		// If name is empty, fallback to class name.
		if (GLOBAL_GET("editor/naming/node_name_casing").operator int() != NAME_CASING_PASCAL_CASE) {
			new_name = Node::adjust_name_casing(p_node->get_class());
		} else {
			new_name = p_node->get_class();
		}
	}
	if (new_name == p_node->get_name()) {
		if (item->get_text(0).is_empty()) {
			item->set_text(0, new_name);
		}
		return;
	}
	// We previously made sure name is not the same as current name so that it won't complain about already used unique name when not changing name.
	if (p_node->is_unique_name_in_owner() && get_tree()->get_edited_scene_root()->get_node_or_null("%" + new_name)) {
		String text = TTR("Another node already uses this unique name in the scene.");
		if (error->is_visible()) {
			if (!error->get_meta("same_unique_name", false)) {
				error->set_text(error->get_text() + "\n\n" + text);