No signal after a period of time

I have the Vero 4k and usually have it on permanently, the HDMI hooked into a Panasonic TV.
Over the last few weeks I have noticed that after a period of not turning on the TV (>3 hours), when I do turn the TV on, I get a no signal on the HDMI channel.

If I take the HDMI cable out and in = it then works.

Has there been something in a recent update that might have caused this? Is there a setting I need to set to keep sending a signal from Kodi to the TV? Whats best practise?

Enable HPD Lock under Settings -> Display.

We haven’t changed anything that would affect this behaviour however.