Airplay won't wake up my Sony Bravia TV + ATV 4

Hi,

I have the new Apple TV 4 and a Sony Bravia W805 TV.

If I start my Apple TV with the Apple Remote the TV is waking up properly. But if I start the Apple TV with Airplay my TV stays off.

So my Apple TV is able to wake up my TV, but not in every case.

For me is that Airplay use case absolutely mandatory because if want to play a Video or see a picture I need a display.

Someone with a similar problem or a solution?

Best

Philipp