Really? I didn't know that.

When I did the color shading test I failed crazy with the shades between green and red, including yellow. Obviously I failed the whole board, but that was the worst though.

Can you try to see the difference, because you should see it, with colorblindness the shades are just harder to see? If you actually cannot tell the difference you might have something else than protanomaly, like missing one cone completely rather than a shifted one.

Unless you meant protanopia, rather then protanomaly, the -nopia means a missing cone aka dichromacy, and -nomaly a shifted one I think?