trust me, it wasn't.
Inside the Libcec 4 settings I think I have try any possible combinaisons, and it was like they had no effect at all.
Beleive me or not, but I did try during maybe 10 or 15 hours in total trying all possible combinaisons, starting the AVR before, after kodi, same for the TV, same for kodi...
I did even test sending commands to wake up/standby TV and/or AVR (I cant recall what commands exactly) directly through SSH, and what is strange is that all where working correctly.
I can understand that the CEC thing is hard for dev to work on and test since there is a lot of different TV/AVR combo arround and even some brand implementing there "own" CEC.
But maybe some basic guidlines/tutorial could be written somewhere to help user to "debug"/configure Libcec themself on their own install.
Those commands I did use using SSH give feedback and seems chatty with a lot of informations, but since I didn't know what to do with those infos they where useless for me.
Anyway, I have now something that wasn't working and now is I will try in the next days to see if more functions of Libcec are also working now.
For exemple turning of my AVR wasn't working too (I was using my TV option to standby the AVR instead), maybe it is now.