CEC behavior in OE vs. LE

Hi all,
OE is a dead project so I decided to upgrade OE to LE on my RPi2. Upgrade went without problems so I'm happy user of LE.
Configuration is as follow:
RPi2 --- HDMI ---> AVR Denon --- HDMI ---> TV Panasonic.
Problem:
When switching off TV (using TVs remote) and then switching off AVR (using AVR's remote) Denon is automatically switching on, so I have to press Power off button again in order to switch it off.
That was not happen when running OE on RPi2 but is so annoying when using LE.
I was trying to find out a threads related to this issue but no one reported exact the same behavior.
Hoping this will solve the issue I have upgraded to LE 7.90.005 but it remain and unfortunately settings for CEC are not appearing - just an empty box so I can't experiment with changing settings.
Any suggestions?
Is anyone experience the same result with CEC?