I have a RPI 2 running August 2016 build of OSMC. The PI’s HDMI source will disappear from the TV input list when I change the input and the PI idles for a little while. The only way I can get it back is to reboot the PI. The TV is a Plasma Sony Bravia, can’t find the model # since its not my TV, and its mounted to the wall. CEC works just fine when the input is listed.