This issue randomly started happening today. I went to flick from sky to my PS5 (which was connected to HDMI 2) and it just stayed on the sky. When I tried to switch to HDMI 1 it showed nothing connected, even though this is where the sky box is connected to. I have fully reset the TV, swapped all the HDMI’s round and nothing has helped.
Sky connected to HDMI 1, TV shows no connection on HDMI 1
PS5 connected to HDMI 1, TV shows Sky on HDMI 2
nothing is connected to HDMI 3, TV shows PS5 on HDMI 3