I just noticed this one today while looking at the nose of trains in close-up zoom. The animated arrows that travel down the pattern of dots on the roofs of trains do not actually point straight towards the nose.
The second image I've attached here has some arrows drawn on it to show the discrepancy. The green arrow is aligned straight down the nose. The magenta arrow follows the groove in the dots. The dots should be aligned with the green arrow, but they're aligned with the magenta arrow instead.