I asume that this issue will not give any e2 log information. It just seems that code for shutdown when no key pressed still is active when tuners are in a standby state, wich it should not do in my opinion. And nice if we can choose between states (shutdow, standby e.g.) when 'Shutdown when no button has been pressed' is active. I would only use this feature if 'Standby' was what it did.
Glad to help!