### Godot version

4.1 rc3

### 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

This™
![image](https://github.com/godotengine/godot/assets/2223172/cb33110f-a5b0-400a-951f-3fa425f05714)

It can still happen, but it's more difficult to trigger.

### Steps to reproduce

1. Create a new scene with a Control node
2. Add Theme to the Control
3. Open Theme Editor
4. Clear the `theme` property in Control
5. Save, with Theme Editor opened
6. Restart

### Minimal reproduction project

N/A
path = path.substr(6);
				}
				path = path.get_basename();
				
				scene_name = scene_name.trim_suffix("/");
				path = path.trim_suffix("/");
				
				
				
				can_proceed = can_proceed || (path.size() - scene_name.size()) >= 1;
				E = E->next();
				if (to_erase) {
					iset.erase(to_erase);
				}
			}
			if (!can_proceed) {
				break;
			}
		}
	}
}
void EditorNode::_update_scene_tabs() {
	bool show_rb = EDITOR_GET("interface/scene_tabs/show_script_button");
	if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_GLOBAL_MENU)) {
		DisplayServer::get_singleton()->global_menu_clear("_dock");
	}
	
	Vector<String> disambiguated_scene_names;
	Vector<String> full_path_names;
	for (int i = 0; i < editor_data.get_edited_scene_count(); i++) {