Appreciate the details. Just to confirm, have you tried resetting the YouTube app on your TV to see if that makes any difference? Here's how: Click on the gear icon > Click Settings > Click Reset App. Let us know how it goes.
Thanks for confirming. Please send a feedback report directly from YouTube with these steps: https://yt.be/help/feedback . While every individual report may not get a direct response, we do review everything and use the details to investigate and fix issues.