Until Friday (15 November 2024), the 'Live TV' app on the Home Screen showed a thumbnail of the selected channel. Since then it doesn't show a preview thumbnail. I checked, and the signal strength is 4 bars... I rebooted, powered off, nothing fixed it. No recent software update (last updated on 17 October, version 14.0).
TV is TCL Roku TV, model 55S455
Does anyone have any suggestions to restore this functionality?
