Ask HN: Why do polarized lenses make certain colors float over one another?

Note: you'll need polarized lenses for this to work (I believe mine are radially polarized, but I'm not sure if that makes a difference).

If you go to https://support.google.com/checkout/sell/answer/3080449 you'll notice the little black icon to the right of "Learn more" appears to float around the red background. If you tilt your head to the left and right while looking at it, you can get the black icon to almost overlap the surrounding characters. You can also look at the edge of the red box (the left side worked best for me) and you'll notice the red dramatically pull away from the left edge of the screen.

I've noticed this before with pure red and blue LED frequencies pulling away from each other (NYC street vendors have some great examples), but I always thought it was due to the thickness of my lenses towards the edge. The idea is that different frequencies of light bend with different amounts, thus causing them to split.

But I tested this with some coworkers and it appears that it only affects those of us with polarized lenses.

So I ask you, HN: What's the cause of this? Why does this only appear to happen with polarized lenses and not every lens?