Sorry, might be a problem related to the Manufacturer, not Android TV in general. But I need serious help here.

I'm using a Onida Android TV (based on kitkat). After turning on HDMI CEC in settings of the TV, turning off the chromecast turns off my tv, but as soon as the chromecast turns on and the TV with it too, the HDMI CEC option is disabled again. So I can't turn the TV back off the second time, unless I turn it on again manually.

*TV Model: Onida LEO24HAIN