In 1.5.5, hiding out of stock items works but each time you have to reindex the posts. When an order is placed, it says out of stock, but it doesn’t actually hide it until you reindex the posts. Video here: https://drive.google.com/open?id=17IzwRHgtLPH5KVcVSYOZGM5WtSxU4Xcw&usp=drive_fs