LG 75UK6200PLB Major CEC-bug
I plug any CEC compatible device into any HDMI socket and turn on the CEC settings on both the LG TV and CEC device. Now if I turn on the CEC device by the power button on the CEC enabled devices remote (i.e Apple TV remote) or power button on the LG remote, everything is good.
If I turn on the TV by pressing 1 for Live TV then Live TV comes on and then 2 seconds later the CEC device is powered up and the input is switched from Live TV to the HDMI.
This happens with all CEC devices, I have tested a PS4, Apple TV and Switch and the same happen?
This is a major fault and a bug in the firmware on the LG TV not the CEC devices because this never happens on my Samsung TV.