Probably because standby draws such a tiny ammount of current that the
panel
assumes the TV is off. No easy fix for this. Maybe use an X10 appliance
module(s) to allow you to send an off signal to everything you want off at
night??

Also, it is how you would want it to work surely?

Most people just want to sense standby to turn all the other stuff off and
still be able to use the remote to turn it back on again. If you can
actually be bothered to stand up, walk across and flick a real switch, then
you might as well hit the one on the socket instead of the TV. No need for
electronic assistance.

Christian.