### 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
_zoom_on_position(p_zoom, viewport_scrollable->get_size() / 2.0);
}
void CanvasItemEditor::_shortcut_zoom_set(real_t p_zoom) {
	_zoom_on_position(p_zoom * MAX(1, EDSCALE), viewport->get_local_mouse_position());
}
void CanvasItemEditor::_button_toggle_smart_snap(bool p_status) {
	smart_snap_active = p_status;
	viewport->queue_redraw();
}
void CanvasItemEditor::_button_toggle_grid_snap(bool p_status) {