Roku does not manufacture the TVs themselves. You would need to contact the TV manufacturer.
I’m into videotapes and old electronics stuff, including extenders, converters and analog 4:3 TV sets (which are obsolete these days), and Miss Bianca is my favorite character in Disney’s The Rescuers (1977) and its sequel, The Rescuers Down Under (1990). I am not a Roku employee, only a user like you. ~ Jordan
Can you please specify the issue you are experiencing? What are the steps to reproduce the issue you are experiencing? Can you please provide a screenshot of what you are seeing on screen so we can better understand the issue you are experiencing?
With more detailed information, we will be able to assist you further.