this is not a fault according to the service centre. https://drive.google.com/file/d/1GpEw5PCO6MJ09C_xyCeYD8UM3VxROqHn/view?usp=sharing
Depends how hard you're pressing it. If there's no spot visible all the time and it doesn't come up with light (regular) taps, I don't think it's a big problem. But it does indicate a very unevenly built screen.