Possible fix for blog menu current highlighting with other post types

gistfile1.php

add_filter('nav_menu_css_class', 'generate_cpt_active_menu', 400);
function generate_cpt_active_menu($menu) {
	$post_type = get_post_type();

	switch($post_type) {
	
		// Replace gallery with the name of your custom post type
		case 'gallery':
			$menu = str_replace('current-menu-item', '', $menu);
			$menu = str_replace('current_page_item', '', $menu);
		break;
    
  	}

	return $menu;
}