When you say “hard-reboot” your TV, was that by pulling the power cable or using the reboot option in the menu? I ask because the menu option isn’t as full of a reboot as pulling the power cable; pulling the power cable clears caches that aren’t cleared using the menu reboot and can fix oddities. This is true of the TV (I have two TCLs) and boxes (I have a few) - been using the pull power “fix” for many many years to clear up occasional weird bugs. Might be worth a shot.
