Answer:
The described effect is not a display error, only a question of perspective and a good example of an optical illusion. It depends on whether you perceive the representation of the axis system as an inner or outer corner.
Example: Rubik's Cube in Isometric View
The yellow side of the cube is the top surface. In the preset isometric view, you can see the inner corner of the coordinate system diagonally from above. If you simply turn the view upside down so that Z points upwards, X to the right, and Y to the left, you are looking at the bottom of the cube; that is, from above onto the lower outer corner of the coordinate system.
If you rotate the view by 45 ° about the horizontal axis, you may get the impression that you are looking at the inner corner of the coordinate system. However, this is the outer corner.
