We thought that it's browser or maybe wp cache. But if you don't have any of them, then we have no idea what could be the problem. Maybe plugins or maybe something is wrong with .htaccess file on your server. Try to change permalinks and see if everything works on default permalinks.
Yes, we tried this functionality thousand of times and everything works fine. Please send us access to your dashboard with explanation where and exactly when it happen and we'll have a look on it.
Comments
maybe it's because of cache?