There is an issue with QoS mentioned in the latest firmware release notes:
WAN QoS profile binding based on a particular services, such as FTP, may
not work properly.
What does "may not" mean? Does it work for some services and not for others or does it occasionally fail to work properly for a service? Also, this is a serious problem which severely limits the QoS settings. Is this issue going to be fixed in a future firmware release or not?