Assuming that the mouse pointer is parallel to the display and that a light themes is used, the visual click zone is positioned below and to the right of the upper left corner.
E: correct content
E₂ (correction): The visual click zone should be more than 1 px², but it’s not misaligned.
I think I understand the pixel you are referring too, it may be diagonally adjacent to the click pixel.
I’m not sure I understand ‘why’ post OP suggests that should be the ‘correct’ click pixel?