### 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
Ref<EditorUndoRedoManager> &undo_redo = EditorNode::get_undo_redo();
	Ref<InputEventMouseButton> b = p_event;
	Ref<InputEventMouseMotion> m = p_event;
	if (drag_type == DRAG_NONE) {
		if (show_guides && show_rulers && EditorNode::get_singleton()->get_edited_scene()) {
			Transform2D xform = viewport_scrollable->get_transform() * transform;
			
			Array vguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_vertical_guides_", Array());
			Array hguides = EditorNode::get_singleton()->get_edited_scene()->get_meta("_edit_horizontal_guides_", Array());
			
			real_t minimum = 1e20;
			is_hovering_h_guide = false;
			is_hovering_v_guide = false;
			if (m.is_valid() && m->get_position().x < RULER_WIDTH) {
				
				for (int i = 0; i < hguides.size(); i++) {
					if (ABS(xform.xform(Point2(0, hguides[i])).y - m->get_position().y) < MIN(minimum, 8)) {
						is_hovering_h_guide = true;
						is_hovering_v_guide = false;
						break;
					}
				}
			} else if (m.is_valid() && m->get_position().y < RULER_WIDTH) {
				
				for (int i = 0; i < vguides.size(); i++) {
					if (ABS(xform.xform(Point2(vguides[i], 0)).x - m->get_position().x) < MIN(minimum, 8)) {
						is_hovering_v_guide = true;
						is_hovering_h_guide = false;