### 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
Node *scene = EditorNode::get_singleton()->get_edited_scene();
	_find_canvas_items_at_pos(p_pos, scene, r_items);
	
	for (int i = 0; i < r_items.size(); i++) {
		Node *node = r_items[i].item;
		
		if (node && node != get_tree()->get_edited_scene_root()) {
			node = scene->get_deepest_editable_node(node);
		}
		CanvasItem *ci = Object::cast_to<CanvasItem>(node);
		if (!p_allow_locked) {
			
			while (node && node != scene->get_parent()) {
				CanvasItem *ci_tmp = Object::cast_to<CanvasItem>(node);
				if (ci_tmp && node->has_meta("_edit_group_")) {
					ci = ci_tmp;
				}
				node = node->get_parent();
			}
		}
		
		bool duplicate = false;
		for (int j = 0; j < i; j++) {
			if (r_items[j].item == ci) {
				duplicate = true;