### Godot version

4.0 beta 10, mono edition

### System information

Windows 11

### Issue description

No matter what I do Project Camera Override can never detect a game instance.

![image](https://user-images.githubusercontent.com/13719743/209912444-541f642a-42d3-4860-a4e0-54a17dbbab0b.png)

Of relevance: I can see remote nodes. I can see the output in the console. I can see the output in my IDE of choice (Rider). I can toggle debug mode.

It's just the camera that is unable to detect the game instance.

### Steps to reproduce

This happens everywhere, including on a brand new projects where the only nodes are a 2d camera and the Godot svg icon for testing. This also seems to happen when not using Rider as a third party editor.

### Minimal reproduction project

N/A
CheckBox *check = Object::cast_to<CheckBox>(selected);
	String type = check->get_text();
	selector->set_title(vformat(TTR("Add %s"), type));
	label->set_text(vformat(TTR("Adding %s..."), type));
}
void CanvasItemEditorViewport::_on_change_type_confirmed() {
	if (!button_group->get_pressed_button()) {
		return;
	}
	CheckBox *check = Object::cast_to<CheckBox>(button_group->get_pressed_button());
	default_texture_node_type = check->get_text();
	_perform_drop_data();
	selector->hide();
}
void CanvasItemEditorViewport::_on_change_type_closed() {
	_remove_preview();
}
void CanvasItemEditorViewport::_create_preview(const Vector<String> &files) const {
	bool add_preview = false;
	for (int i = 0; i < files.size(); i++) {
		String path = files[i];
		Ref<Resource> res = ResourceLoader::load(path);
		ERR_FAIL_COND(res.is_null());
		Ref<Texture2D> texture = Ref<Texture2D>(Object::cast_to<Texture2D>(*res));
		Ref<PackedScene> scene = Ref<PackedScene>(Object::cast_to<PackedScene>(*res));
		if (texture != nullptr || scene != nullptr) {
			bool root_node_selected = EditorNode::get_singleton()->get_editor_selection()->is_selected(EditorNode::get_singleton()->get_edited_scene());
			String desc = TTR("Drag and drop to add as child of current scene's root node.") + "\n" + TTR("Hold Ctrl when dropping to add as child of selected node.");