Ross, I should have written an update. In the end what fixed this issue for me was to go through "factory reset" option of the menu, and the problem hasn't come back. I know it is a pain if you have set up various apps etc and have to set them up again, but it is worth it. I'd give it a try.
I suffer from a similar issue on my LG OLED65B8. The channels saved within "My Channels" will vanish before my eyes after my TV has previously been disconnected from the mains - something I do every night. To me this is a software glitch as the channels show up and then disappear and it acts as though you've just tried "My Channels" for the first time!
Programme List Update is turned off and I also tried a factory reset but it has not solved the issue.
" My Channels" keep disappearing
in LG webOS Smart TV Questions
Posted
I suffer from a similar issue on my LG OLED65B8. The channels saved within "My Channels" will vanish before my eyes after my TV has previously been disconnected from the mains - something I do every night. To me this is a software glitch as the channels show up and then disappear and it acts as though you've just tried "My Channels" for the first time!
Programme List Update is turned off and I also tried a factory reset but it has not solved the issue.