### Godot version

4.0 beta 13

### System information

macOS 13 Ventura, Macbook Pro 2019, 16-inch

### Issue description

In Godot 4, if a editor is expanded to a title bar, double clicking on any button in a title bar such as "Run Project" or "Stop Running Project" will result in minimizing or shrinking a Godot window. It is a small but quite annoying bug and it works in all Godot 4 betas I'v seen. 

### Steps to reproduce

Turn on "Expand to Title" in the Editor Settings/Interface/Editor, than double click on any button in the title area.

### Minimal reproduction project

N/A
if (p_idx == 0) { 
		current_menu_option = FILE_EXPORT_MESH_LIBRARY;
		if (!editor_data.get_edited_scene_root()) {
			show_accept(TTR("This operation can't be done without a scene."), TTR("OK"));
			return;
		}
		List<String> extensions;
		Ref<MeshLibrary> ml(memnew(MeshLibrary));
		ResourceSaver::get_recognized_extensions(ml, &extensions);
		file_export_lib->clear_filters();
		for (const String &E : extensions) {
			file_export_lib->add_filter("*." + E);
		}
		file_export_lib->popup_file_dialog();
		file_export_lib->set_title(TTR("Export Mesh Library"));
	} else { 
		if (export_as_menu->get_item_submenu(p_idx).is_empty()) { 
			Callable callback = export_as_menu->get_item_metadata(p_idx);
			Callable::CallError ce;
			Variant result;
			callback.callp(nullptr, 0, result, ce);
			if (ce.error != Callable::CallError::CALL_OK) {
				String err = Variant::get_callable_error_text(callback, nullptr, 0, ce);
				ERR_PRINT("Error calling function from export_as menu: " + err);
			}
		}
	}
}
int EditorNode::_next_unsaved_scene(bool p_valid_filename, int p_start) {