I suppose it's a bug in the YouTube app on TV or in the TV's software but I might be wrong.
Could anyone from the staff please check into this and report it to YouTube eventually? I've been sending them feedback every day via https://www.youtube.com/tv/feedback since 1 month. There has been at least 3 YouTube app updates since my first feedback but problem persists.
Both me and this person have tried to reinstall the YouTube app, reinstall Chrome but without any luck.